:root {
    /* Brand palette */
    --color-primary: #1F6F3E;
    --color-primary-hover: #0F4F2A;
    --color-primary-light: #4FA66A;
    --color-primary-dark: #0F4F2A;
    --color-secondary: #4FA66A;
    --color-secondary-hover: #1F6F3E;

    --color-background: #FFFFFF;
    --color-surface: #F2F2F2;
    --color-surface-elevated: #FFFFFF;
    --color-surface-hover: #E5E5E5;

    --color-text-primary: #333333;
    --color-text-secondary: #555555;
    --color-text-muted: #666666;
    --color-text-disabled: #999999;

    --color-border: #DDDDDD;
    --color-border-hover: #CCCCCC;
    --color-border-focus: #1F6F3E;

    --color-success: #1F6F3E;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #4FA66A;

    --color-link: var(--color-primary);
    --color-link-hover: var(--color-primary-hover);
    --color-link-visited: var(--color-primary-light);
    --color-link-active: var(--color-primary-dark);
    --color-link-focus: var(--color-primary);

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(31, 111, 62, 0.3);

    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

/* Dark mode*/
[data-theme="dark"] {
    --color-background: #0f1419;
    --color-surface: #1a2332;
    --color-surface-elevated: #1e2a3a;
    --color-surface-hover: #253340;

    --color-text-primary: #e6edf3;
    --color-text-secondary: #b4bcc7;
    --color-text-muted: #8b949e;
    --color-text-disabled: #6e7681;

    --color-border: #30363d;
    --color-border-hover: #484f58;
    --color-border-focus: #4FA66A;

    --color-primary: #4FA66A;
    --color-primary-hover: #6bc48a;
    --color-primary-light: #6bc48a;
    --color-secondary: #4FA66A;
    --color-secondary-hover: #6bc48a;

    --color-link: #6bc48a;
    --color-link-hover: #4FA66A;
    --color-link-visited: #6bc48a;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 24px rgba(79, 166, 106, 0.25);
}

[data-theme="dark"] .theme-icon-sun { display: none; }
[data-theme="dark"] .theme-icon-moon { display: block !important; }
[data-theme="light"] .theme-icon-sun { display: block; }
[data-theme="light"] .theme-icon-moon { display: none !important; }

.theme-toggle-btn {
    min-width: 44px;
    min-height: 44px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background: var(--color-background);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Touch-friendly tap highlight */
a, button {
    -webkit-tap-highlight-color: rgba(31, 111, 62, 0.15);
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--color-primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: var(--radius-md);
    z-index: var(--z-tooltip);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 6px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.site-header {
    position: sticky;
    top: 0;
    background: var(--color-primary);
    border-bottom: 1px solid var(--color-primary-dark);
    z-index: var(--z-sticky);
    transition: all var(--transition-normal);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

.site-header .brand-title,
.site-header .brand-sub,
.site-header .nav-link,
.site-header .user-email {
    color: #FFFFFF;
}

.site-header .brand-sub {
    color: rgba(255, 255, 255, 0.9);
}

.site-header .brand-mark {
    color: #FFFFFF;
}

.site-header .nav-link:hover {
    color: #FFFFFF;
    background: rgba(255, 255, 255, 0.15);
}

.site-header .nav-link:focus {
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.4);
}

.site-header .nav-link::after {
    background: #FFFFFF;
}

.site-header .btn-sign-in {
    background: rgba(255, 255, 255, 0.2);
    color: #FFFFFF;
    border-color: rgba(255, 255, 255, 0.4);
}

.site-header .btn-sign-in:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.6);
}

.site-header .btn-secondary,
.site-header .btn-sign-out {
    color: #FFFFFF;
    border-color: rgba(255, 255, 255, 0.5);
    background: transparent;
}

.site-header .btn-secondary:hover,
.site-header .btn-sign-out:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.7);
}

.site-header .sidebar-toggle-btn {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    color: #FFFFFF;
}

.site-header .sidebar-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.6);
}

.site-header .user-avatar {
    border-color: rgba(255, 255, 255, 0.5);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    gap: var(--space-4);
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.brand-mark {
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0;
}

.brand-sub {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin: 0;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.auth-container,
.user-container {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.user-container.hidden,
.auth-container.hidden {
    display: none;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--color-border);
}

.user-email {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    max-width: 160px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/*minimum touch target size for accessibility*/
.btn,
.btn-sign-in,
.btn-icon,
.sidebar-toggle-btn,
.nav-link,
.footer-link {
    min-height: 44px;
}
.btn-icon,
.sidebar-toggle-btn {
    min-width: 44px;
}

.btn-sign-in {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: var(--color-surface-elevated);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.btn-sign-in:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-border-hover);
}

.google-icon {
    flex-shrink: 0;
}

.btn-sign-out {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
}

.sidebar-toggle-btn {
    position: relative;
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    padding: var(--space-2);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-toggle-btn:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-border-hover);
}

.sidebar-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-full);
    width: 20px;
    height: 20px;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border: 2px solid var(--color-background);
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    color: var(--color-text-primary);
    background: var(--color-surface-elevated);
}

.sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100vh;
    z-index: 1000;
    pointer-events: none;
}

.sidebar.open {
    pointer-events: auto;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 999;
}

.sidebar.open .sidebar-overlay {
    opacity: 1;
    visibility: visible;
}

.sidebar-content {
    position: absolute;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 420px;
    height: 100%;
    height: 100dvh;
    max-height: 100vh;
    background: var(--color-surface);
    border-left: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    z-index: 1001;
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.3);
    transition: right 0.3s ease;
    padding-top: env(safe-area-inset-top);
    padding-right: env(safe-area-inset-right);
}

.sidebar.open .sidebar-content {
    right: 0;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

.sidebar-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0;
}

.sidebar-close-btn {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
}

.sidebar-close-btn:hover {
    background: var(--color-surface-hover);
}

.sidebar-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-6);
}

.sidebar-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-12) var(--space-6);
    color: var(--color-text-muted);
}

.sidebar-empty-state svg {
    margin-bottom: var(--space-4);
    opacity: 0.5;
}

.sidebar-empty-state p {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    margin: var(--space-2) 0;
}

.sidebar-empty-state small {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.saved-roadmaps-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.sidebar .saved-roadmap-item {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-5);
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all 0.2s ease;
    cursor: pointer;
}

.sidebar .saved-roadmap-item:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-border-hover);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(31, 111, 62, 0.1);
}

.sidebar .saved-roadmap-info {
    width: 100%;
    margin-bottom: var(--space-4);
}

.sidebar .saved-roadmap-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-2) 0;
    line-height: 1.4;
}

.sidebar .saved-roadmap-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.sidebar .saved-roadmap-date {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-2);
}

.sidebar .saved-roadmap-actions {
    display: flex;
    gap: var(--space-3);
    width: 100%;
    justify-content: flex-end;
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    position: relative;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-link:hover {
    color: var(--color-text-primary);
    background: rgba(31, 111, 62, 0.1);
    transform: translateY(-1px);
}

.nav-link:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(31, 111, 62, 0.3);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-fast);
}

.nav-link:hover::after {
    width: 80%;
}

.main-content {
    flex: 1;
    padding: var(--space-16) 0;
    padding-bottom: calc(var(--space-16) + env(safe-area-inset-bottom, 0px));
}

.hero {
    text-align: center;
    margin-bottom: var(--space-20);
    position: relative;
    padding: var(--space-12) var(--space-6);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    background:
        radial-gradient(900px 420px at 20% 20%, rgba(79, 166, 106, 0.18) 0%, transparent 60%),
        radial-gradient(800px 420px at 80% 10%, rgba(31, 111, 62, 0.14) 0%, transparent 55%),
        linear-gradient(180deg, rgba(31, 111, 62, 0.06) 0%, transparent 70%);
    border: 1px solid rgba(31, 111, 62, 0.10);
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(31, 111, 62, 0.18) 1px, transparent 1px);
    background-size: 18px 18px;
    opacity: 0.18;
    pointer-events: none;
    mask-image: radial-gradient(circle at 50% 30%, black 0%, transparent 70%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-6);
    color: var(--color-text-primary);
}

.text-highlight {
    color: var(--color-primary);
}

.hero-description {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    max-width: 600px;
    margin: 0 auto;
}

.hero-proof {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-6);
}
.hero-proof-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(8px);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}
[data-theme="dark"] .hero-proof-pill {
    background: rgba(30, 42, 58, 0.6);
}

.section-head {
    text-align: center;
    margin: var(--space-16) 0 var(--space-8);
}
.section-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-3) 0;
}
.section-subtitle {
    color: var(--color-text-secondary);
    max-width: 680px;
    margin: 0 auto;
    line-height: var(--line-height-relaxed);
}

.how-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-6);
}
.how-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-md);
    margin-bottom: 1vh;
}
.how-icon {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: rgba(31, 111, 62, 0.12);
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}
.how-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-2) 0;
}
.how-desc {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin: 0;
}

.example-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-10);
    box-shadow: var(--shadow-md);
}
.mini-timeline {
    display: grid;
    gap: var(--space-6);
}
.mini-item {
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
}
.mini-dot {
    width: 12px;
    height: 12px;
    margin-top: 6px;
    border-radius: 999px;
    background: var(--color-primary);
    box-shadow: 0 0 0 6px rgba(31, 111, 62, 0.12);
    flex-shrink: 0;
}
.mini-title {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}
.mini-desc {
    color: var(--color-text-secondary);
    margin-top: var(--space-1);
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.form-card {
    background: var(--color-surface);
}

.card-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.card-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.card-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.brand-title-link {
    text-decoration: none;
    color: inherit;
    display: inline-flex;
}

/* Legal pages */
.legal-card .card-header {
    text-align: left;
}
.legal-content {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}
.legal-content h3 {
    color: var(--color-text-primary);
    font-size: var(--font-size-xl);
    margin-top: var(--space-8);
    margin-bottom: var(--space-3);
}
.legal-content p {
    margin-top: var(--space-3);
}
.legal-content ul {
    margin-top: var(--space-3);
    padding-left: var(--space-6);
}
.legal-content li {
    margin-top: var(--space-2);
}

.form-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.field-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
}

.field {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.field-label {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.label-optional {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-muted);
    margin-left: var(--space-2);
}

.required-indicator {
    color: var(--color-error);
    font-weight: var(--font-weight-bold);
}

.input-wrapper,
.select-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-field,
.select-field {
    width: 100%;
    padding: var(--space-4) var(--space-5);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface-elevated);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    outline: none;
}

textarea.input-field {
    min-height: 96px;
    resize: vertical;
    line-height: var(--line-height-normal);
}

.input-field:focus,
.select-field:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(31, 111, 62, 0.1);
    background: var(--color-surface);
}

.input-field::placeholder {
    color: var(--color-text-muted);
}

.input-icon {
    position: absolute;
    right: var(--space-4);
    color: var(--color-text-muted);
    pointer-events: none;
}

.input-suffix {
    position: absolute;
    right: var(--space-4);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    pointer-events: none;
}

.select-field {
    appearance: none;
    padding-right: var(--space-12);
    cursor: pointer;
}

.select-icon {
    position: absolute;
    right: var(--space-4);
    color: var(--color-text-muted);
    pointer-events: none;
}

.field-hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: var(--line-height-normal);
}

.hint-accent {
    display: inline-block;
    margin-left: var(--space-2);
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
}

.input-stepper {
    gap: var(--space-2);
}
.stepper-btn {
    border: 1px solid var(--color-border);
    background: var(--color-surface-elevated);
    color: var(--color-text-primary);
    border-radius: var(--radius-lg);
    height: 46px;
    width: 46px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}
.stepper-btn:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-border-hover);
}
.input-stepper .input-field {
    padding-right: calc(var(--space-12) + 46px);
}
.input-stepper .input-suffix {
    right: calc(var(--space-4) + 46px);
}

.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4) var(--space-8);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
    overflow: hidden;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: white;
    box-shadow: var(--shadow-lg);
    min-height: 56px;
    padding: var(--space-4) var(--space-10);
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-hover);
    transform: translateY(-2px) scale(1.01);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--color-surface-elevated);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-surface-hover);
    border-color: var(--color-border-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-content {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    transition: opacity var(--transition-fast);
}

.btn-loading {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn.loading .btn-content {
    opacity: 0;
}

.btn.loading .btn-loading {
    opacity: 1;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.form-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

.action-hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-align: center;
}

.output-section {
    margin-top: var(--space-12);
    animation: fadeInUp var(--transition-slow) ease-out;
}

.output-content {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-xl);
}

/* Skeleton loader during roadmap generation */
.skeleton-roadmap {
    pointer-events: none;
}
.skeleton-status {
    font-size: var(--font-size-base);
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--space-6);
    min-height: 1.5em;
}

.skeleton-progress {
    height: 10px;
    border-radius: var(--radius-full);
    overflow: hidden;
    background: rgba(31, 111, 62, 0.10);
    border: 1px solid rgba(31, 111, 62, 0.18);
    margin-bottom: var(--space-4);
}
.skeleton-progress-fill {
    height: 100%;
    width: 35%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-full);
    animation: skeleton-progress 2.8s ease-in-out infinite;
}
@keyframes skeleton-progress {
    0% { transform: translateX(-30%); width: 30%; opacity: 0.75; }
    50% { transform: translateX(40%); width: 70%; opacity: 1; }
    100% { transform: translateX(120%); width: 35%; opacity: 0.75; }
}
.skeleton-fact {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
    min-height: 1.2em;
}
.skeleton-header-title {
    height: 28px;
    width: 70%;
    max-width: 320px;
    margin-bottom: var(--space-3);
    border-radius: var(--radius-md);
}
.skeleton-header-summary {
    height: 16px;
    width: 95%;
    max-width: 480px;
    margin-bottom: var(--space-4);
    border-radius: var(--radius-sm);
}
.skeleton-badges {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
}
.skeleton-badge {
    height: 24px;
    width: 72px;
    border-radius: var(--radius-full);
}
.skeleton-node {
    margin-bottom: var(--space-8);
    padding-left: var(--space-8);
}
.skeleton-node-title {
    height: 22px;
    width: 55%;
    max-width: 280px;
    margin-bottom: var(--space-4);
    border-radius: var(--radius-md);
}
.skeleton-step {
    height: 14px;
    width: 88%;
    margin-left: var(--space-4);
    margin-bottom: var(--space-3);
    border-radius: var(--radius-sm);
}
.skeleton-step:nth-child(2) { width: 82%; }
.skeleton-step:nth-child(3) { width: 75%; }
.skeleton-step:nth-child(4) { width: 90%; }

.skeleton-shimmer,
.skeleton-header-title,
.skeleton-header-summary,
.skeleton-badge,
.skeleton-node-title,
.skeleton-step {
    background: linear-gradient(
        90deg,
        var(--color-surface-hover) 0%,
        var(--color-border) 50%,
        var(--color-surface-hover) 100%
    );
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s ease-in-out infinite;
}
@keyframes skeleton-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

[data-theme="dark"] .skeleton-header-title,
[data-theme="dark"] .skeleton-header-summary,
[data-theme="dark"] .skeleton-badge,
[data-theme="dark"] .skeleton-node-title,
[data-theme="dark"] .skeleton-step {
    background: linear-gradient(
        90deg,
        var(--color-surface) 0%,
        var(--color-border) 50%,
        var(--color-surface) 100%
    );
    background-size: 200% 100%;
}

.link,
.resource-link {
    color: var(--color-link);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    transition: all var(--transition-fast);
    position: relative;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-weight: var(--font-weight-medium);
    word-break: break-word;
    overflow-wrap: anywhere;
}

.link:hover,
.resource-link:hover {
    color: var(--color-link-hover);
    background: rgba(31, 111, 62, 0.1);
    transform: translateY(-1px);
    text-decoration: none;
}

.link:focus,
.resource-link:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(31, 111, 62, 0.3);
}

.link:visited,
.resource-link:visited {
    color: var(--color-link-visited);
}

.link:active,
.resource-link:active {
    color: var(--color-link-active);
}

.link::after,
.resource-link::after {
    content: '↗';
    font-size: var(--font-size-xs);
    opacity: 0.8;
    transition: all var(--transition-fast);
    margin-left: var(--space-1);
}

.link:hover::after,
.resource-link:hover::after {
    opacity: 1;
    transform: translate(2px, -2px);
}

.link-inline {
    display: inline;
    padding: 0;
    background: none;
    border-radius: 0;
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-fast);
}

.link-inline:hover {
    background: none;
    transform: none;
    border-bottom-color: var(--color-link-hover);
}

.link-inline::after {
    display: none;
}

.link-button {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.link-button:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
}

.link-button::after {
    display: none;
}

.roadmap-header {
    margin-bottom: var(--space-8);
}

.roadmap-header-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-6);
    margin-bottom: var(--space-4);
}

.roadmap-actions {
    display: flex;
    gap: var(--space-3);
    flex-shrink: 0;
}

.roadmap-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-2) 0;
}

.roadmap-summary {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    margin: 0;
}

.roadmap-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-top: var(--space-4);
}

/* Progress tracking */
.roadmap-progress-wrap {
    margin-top: var(--space-4);
    width: 100%;
}
.roadmap-progress-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-2);
}
.roadmap-progress-bar {
    height: 8px;
    background: var(--color-surface);
    border-radius: var(--radius-full);
    overflow: hidden;
}
.roadmap-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-full);
    transition: width 0.35s ease;
}
.roadmap-step.step-complete .step-title { text-decoration: line-through; opacity: 0.75; }
.roadmap-step.step-complete .step-description,
.roadmap-step.step-complete .step-resources,
.roadmap-step.step-complete .step-deliverable { opacity: 0.85; }
.step-complete-checkbox {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    accent-color: var(--color-primary);
    cursor: pointer;
}
.step-header-row {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
}
.step-header-row .step-title { flex: 1; margin: 0; }

/* List / Graph view toggle */
.roadmap-view-tabs {
    display: flex;
    gap: var(--space-1);
    margin-bottom: var(--space-4);
}
.roadmap-view-tab {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.roadmap-view-tab:hover {
    background: var(--color-surface-hover);
    color: var(--color-text-primary);
}
.roadmap-view-tab.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}
.roadmap-graph-container {
    margin-top: var(--space-4);
    padding: var(--space-6);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    min-height: 740px;
    height: min(78vh, 980px);
    width: 100%;
    overflow: hidden;
    display: grid;
    grid-template-rows: auto 1fr;
    gap: var(--space-4);
}

.roadmap-output.roadmap-view-graph .roadmap-graph-container {
    width: 85vw;
    max-width: 1600px;
    margin-left: calc(50% - 42.5vw);
    margin-right: calc(50% - 42.5vw);
}
.roadmap-graph-container .mermaid {
    height: 100%;
}
.roadmap-graph-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
}
.roadmap-graph-hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}
.roadmap-graph-controls {
    display: inline-flex;
    gap: var(--space-2);
}
.roadmap-graph-btn {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border: 1px solid var(--color-border);
    background: var(--color-surface-elevated);
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.roadmap-graph-btn:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-border-hover);
}
.roadmap-graph-canvas {
    position: relative;
    height: 100%;
    min-height: 640px;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
}

@media (max-width: 768px) {
    .roadmap-graph-container {
        height: min(70vh, 860px);
        min-height: 560px;
    }
    .roadmap-graph-canvas {
        min-height: 460px;
    }

    .roadmap-output.roadmap-view-graph .roadmap-graph-container {
        width: 100%;
        max-width: none;
        margin-left: 0;
        margin-right: 0;
    }
}
.roadmap-graph-container svg {
    width: 100%;
    height: 100%;
    max-width: none;
}
.roadmap-list-view { display: block; }
.roadmap-graph-view { display: none; }
.roadmap-output.roadmap-view-graph .roadmap-list-view { display: none; }
.roadmap-output.roadmap-view-graph .roadmap-graph-view { display: block; }

.roadmap-graph-fallback {
	color: var(--color-text-muted);
	text-align: center;
	padding: var(--space-6);
}

.roadmap {
    position: relative;
    padding-left: var(--space-8);
    margin-top: var(--space-6);
}

.roadmap::before {
    content: '';
    position: absolute;
    left: var(--space-6);
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
}

.roadmap-node {
    position: relative;
    margin-bottom: var(--space-8);
    padding-left: var(--space-4);
}

.roadmap-node::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--space-6));
    top: var(--space-3);
    width: var(--space-4);
    height: 3px;
    background: var(--color-border);
}

.roadmap-node .dot {
    position: absolute;
    left: calc(-1 * var(--space-8));
    top: var(--space-1);
    width: var(--space-6);
    height: var(--space-6);
    border-radius: var(--radius-full);
    background: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-surface), 0 0 0 8px rgba(31, 111, 62, 0.2);
    border: 3px solid var(--color-surface);
}

.roadmap-card {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.roadmap-card:hover {
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.roadmap-card h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.roadmap-card .goal {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    margin-bottom: var(--space-4);
    line-height: var(--line-height-relaxed);
}

.roadmap-card .meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
}

.roadmap-steps {
    margin-top: var(--space-4);
}

.roadmap-step {
    border-left: 2px dashed var(--color-border);
    margin-left: var(--space-4);
    padding-left: var(--space-4);
    margin-top: var(--space-4);
    padding-top: var(--space-4);
}

.roadmap-step-title {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.roadmap-step .desc {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-3);
    line-height: var(--line-height-relaxed);
}

.roadmap-step .resources,
.roadmap-step .deliverable {
    margin-top: var(--space-3);
}

.roadmap-step .resources ul {
    padding-left: var(--space-6);
    margin-top: var(--space-2);
}

.roadmap-step .resources li {
    margin-bottom: var(--space-1);
}

.features-section {
    margin-top: var(--space-20);
    padding: var(--space-16) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-8);
}

.feature-card {
    text-align: center;
    padding: var(--space-8);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    color: var(--color-primary);
    margin-bottom: var(--space-4);
    display: flex;
    justify-content: center;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.feature-title-icon {
    color: var(--color-primary);
}

.faq-list {
    max-width: 920px;
    margin: 0 auto;
    display: grid;
    gap: var(--space-3);
}
.faq-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-5) var(--space-6);
    box-shadow: var(--shadow-sm);
}
.faq-item summary {
    cursor: pointer;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}
.faq-item p {
    margin-top: var(--space-3);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.feature-description {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.site-footer {
    margin-top: auto;
    padding: var(--space-12) 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer-text {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.footer-links {
    display: flex;
    gap: var(--space-6);
}

.footer-link {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    position: relative;
}

.footer-link:hover {
    color: var(--color-text-secondary);
    background: rgba(31, 111, 62, 0.1);
    transform: translateY(-1px);
}

.footer-link:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(31, 111, 62, 0.3);
}

.footer-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 1px;
    background: var(--color-primary);
    transition: width var(--transition-fast);
}

.footer-link:hover::after {
    width: 80%;
}

.hidden {
    display: none !important;
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    color: var(--color-text-muted);
    font-size: var(--font-size-lg);
    padding: var(--space-12);
}

.error {
    color: var(--color-error);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin: var(--space-4) 0;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.badge-primary {
    background: rgba(31, 111, 62, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.badge-secondary {
    background: rgba(79, 166, 106, 0.1);
    border-color: var(--color-secondary);
    color: var(--color-secondary);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.meta-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.btn-small {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
}

.save-button {
    margin-left: var(--space-3);
}

.save-button.saved {
    background: var(--color-success);
    border-color: var(--color-success);
}

.save-button.saved:hover {
    background: var(--color-success);
    opacity: 0.9;
}

@media (max-width: 900px) {
    .container {
        padding: 0 var(--space-5);
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .how-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: var(--space-6);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-4);
    }

    .main-content {
        padding: var(--space-10) 0;
    }

    .header-inner {
        min-height: 64px;
        flex-wrap: nowrap;
        gap: var(--space-2);
    }

    .brand {
        min-width: 0;
    }

    .brand-title {
        font-size: var(--font-size-lg);
    }

    .brand-sub {
        font-size: var(--font-size-xs);
    }

    .hero {
        margin-bottom: var(--space-12);
    }

    .hero-title {
        font-size: var(--font-size-3xl);
        margin-bottom: var(--space-4);
    }

    .hero-description {
        font-size: var(--font-size-base);
    }

    .field-group {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .form-grid {
        gap: var(--space-6);
    }

    .card-header {
        margin-bottom: var(--space-6);
    }

    .card-title {
        font-size: var(--font-size-2xl);
    }

    .card-description {
        font-size: var(--font-size-base);
    }

    .header-nav {
        gap: var(--space-2);
        flex-wrap: nowrap;
        justify-content: flex-end;
    }

    .header-nav .nav-link {
        display: none;
    }

    .user-email {
        display: none;
    }

    .user-info {
        gap: var(--space-1);
    }

    .btn-sign-out {
        padding: var(--space-2) var(--space-3);
        font-size: var(--font-size-xs);
    }

    .sidebar-content {
        max-width: 100%;
    }

    .sidebar-header,
    .sidebar-body {
        padding: var(--space-4);
    }

    .sidebar-title {
        font-size: var(--font-size-lg);
    }

    .features-section {
        margin-top: var(--space-12);
        padding: var(--space-10) 0;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .feature-card {
        padding: var(--space-6);
    }

    .saved-roadmap-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
    }

    .saved-roadmap-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .roadmap-header-top {
        flex-direction: column;
        gap: var(--space-4);
    }

    .roadmap-actions {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .roadmap-title {
        font-size: var(--font-size-2xl);
    }

    .roadmap-summary {
        font-size: var(--font-size-base);
    }

    .output-content {
        padding: var(--space-6);
    }

    .roadmap {
        padding-left: 0;
        margin-left: 0;
    }

    .roadmap::before {
        display: none;
    }

    .roadmap-node {
        padding-left: 0;
        margin-left: 0;
    }

    .roadmap-node::before {
        display: none;
    }

    .roadmap-node .dot {
        position: static;
        margin-bottom: var(--space-3);
        box-shadow: 0 0 0 4px var(--color-surface);
    }

    .roadmap-card {
        padding: var(--space-5);
    }

    .roadmap-card h3 {
        font-size: var(--font-size-lg);
    }

    .site-footer {
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-4);
    }

    .footer-links {
        justify-content: center;
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-3);
    }

    .header-inner {
        min-height: 56px;
    }

    .brand-sub {
        display: none;
    }

    .brand-title {
        font-size: var(--font-size-base);
    }

    .hero {
        margin-bottom: var(--space-8);
    }

    .hero-title {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--space-3);
    }

    .hero-description {
        font-size: var(--font-size-sm);
    }

    .card {
        padding: var(--space-5);
        border-radius: var(--radius-xl);
    }

    .card-header {
        margin-bottom: var(--space-5);
    }

    .card-title {
        font-size: var(--font-size-xl);
    }

    .input-field,
    .select-field {
        font-size: 16px; /* Prevents iOS zoom on focus */
        padding: var(--space-3) var(--space-4);
    }

    .form-actions {
        margin-top: var(--space-5);
    }

    .btn-primary {
        width: 100%;
        min-height: 48px;
        padding: var(--space-4);
    }

    .btn-sign-in {
        width: 100%;
        justify-content: center;
    }

    .output-content {
        padding: var(--space-4);
    }

    .roadmap-card {
        padding: var(--space-4);
    }

    .roadmap-card h3 {
        font-size: var(--font-size-base);
    }

    .roadmap-step {
        margin-left: var(--space-2);
        padding-left: var(--space-3);
    }

    .link,
    .resource-link {
        font-size: var(--font-size-sm);
    }

    .feature-card {
        padding: var(--space-5);
    }

    .feature-title {
        font-size: var(--font-size-lg);
    }

    .site-footer {
        padding: var(--space-8) 0;
    }
}

@media (prefers-contrast: high) {
    :root {
        --color-border: #ffffff;
        --color-text-muted: #ffffff;
        --color-link: #ffffff;
        --color-link-hover: #ffffff;
    }
}

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .link:hover,
    .resource-link:hover,
    .nav-link:hover,
    .footer-link:hover {
        transform: none;
    }
}