/* ============================================
   OneDay — Landing Page
   Theme: Deep dark, glass-morphism, monochrome accent
   Matching the native SwiftUI app
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Backgrounds */
    --bg: #0D0D0D;
    --surface-primary: #141414;
    --surface-secondary: #1A1A1A;
    --surface-tertiary: #222222;

    /* Text */
    --text-primary: rgba(255, 255, 255, 0.9);
    --text-secondary: rgba(255, 255, 255, 0.5);
    --text-tertiary: rgba(255, 255, 255, 0.3);

    /* Borders */
    --border: rgba(255, 255, 255, 0.06);
    --border-subtle: rgba(255, 255, 255, 0.04);

    /* Interactive */
    --fill: rgba(255, 255, 255, 0.05);
    --fill-hover: rgba(255, 255, 255, 0.08);

    /* Inactive */
    --inactive: rgba(255, 255, 255, 0.06);

    /* Accent */
    --accent: #ffffff;
    --accent-muted: rgba(255, 255, 255, 0.12);

    /* Habit Colors */
    --red: #E74C3C;
    --orange: #E67E22;
    --yellow: #F1C40F;
    --green: #2ECC71;
    --blue: #3498DB;
    --purple: #9B59B6;
    --teal: #1ABC9C;
    --gray: #AEAEB2;

    /* Spacing */
    --section-padding: 120px 24px;
    --max-width: 1100px;

    /* Animation */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --duration-fast: 0.2s;
    --duration-medium: 0.35s;
}

::selection {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
}

/* --- Ambient Glow Effects --- */
.ambient-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
    z-index: 0;
    opacity: 0.35;
}

.glow-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.08), transparent 70%);
    top: -200px;
    right: -100px;
    animation: float 20s ease-in-out infinite;
}

.glow-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(155, 89, 182, 0.06), transparent 70%);
    bottom: 20%;
    left: -150px;
    animation: float 25s ease-in-out infinite reverse;
}

.glow-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(46, 204, 113, 0.05), transparent 70%);
    top: 50%;
    right: -100px;
    animation: float 22s ease-in-out infinite 5s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(30px, -30px); }
    66% { transform: translate(-20px, 20px); }
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0 24px;
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    background: rgba(13, 13, 13, 0.7);
    border-bottom: 1px solid var(--border);
    transition: background 0.3s ease;
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 15px;
    letter-spacing: -0.01em;
    transition: opacity var(--duration-fast) ease;
}

.nav-logo:hover {
    opacity: 0.8;
}

.logo-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--fill);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.logo-icon.small {
    width: 26px;
    height: 26px;
    border-radius: 6px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--duration-fast) ease;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-cta {
    padding: 7px 16px;
    background: var(--accent) !important;
    color: #000 !important;
    border-radius: 8px;
    font-weight: 600 !important;
    font-size: 13px;
    transition: all var(--duration-fast) ease;
}

.nav-cta:hover {
    opacity: 0.85;
    color: #000 !important;
    transform: translateY(-0.5px);
}

/* --- Section Dividers --- */
.section-divider {
    max-width: 600px;
    margin: 0 auto;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
}

/* --- Hero --- */
.hero {
    position: relative;
    z-index: 1;
    padding: 160px 24px 80px;
    text-align: center;
}

.hero-content {
    max-width: var(--max-width);
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: var(--fill);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 32px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--green);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
    box-shadow: 0 0 6px rgba(46, 204, 113, 0.4);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: clamp(42px, 6vw, 68px);
    font-weight: 800;
    line-height: 1.06;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
}

.hero-title-muted {
    color: var(--text-tertiary);
}

.hero-subtitle {
    max-width: 500px;
    margin: 0 auto 44px;
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-secondary);
}

.hero-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 80px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 13px 26px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    transition: all var(--duration-medium) var(--ease-out);
    cursor: pointer;
}

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

.btn-primary {
    background: var(--accent);
    color: #000;
    box-shadow: 0 2px 12px rgba(255, 255, 255, 0.08);
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.12);
}

.btn-secondary {
    background: var(--fill);
    color: var(--text-primary);
    border: 1px solid var(--border);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: var(--fill-hover);
    border-color: rgba(255, 255, 255, 0.12);
    transform: translateY(-2px);
}

/* --- App Preview (Hero) --- */
.hero-preview {
    max-width: 920px;
    margin: 0 auto;
    perspective: 1200px;
    position: relative;
}

.preview-glow {
    position: absolute;
    bottom: -60px;
    left: 50%;
    transform: translateX(-50%);
    width: 70%;
    height: 120px;
    background: radial-gradient(ellipse, rgba(52, 152, 219, 0.06), rgba(155, 89, 182, 0.03), transparent 70%);
    filter: blur(40px);
    pointer-events: none;
}

.preview-window {
    background: var(--surface-primary);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow:
        0 0 0 1px var(--border-subtle),
        0 24px 80px rgba(0, 0, 0, 0.6),
        0 0 0 0.5px rgba(255, 255, 255, 0.03) inset;
    transform: rotateX(2deg);
    transition: transform 0.5s var(--ease-out), box-shadow 0.5s var(--ease-out);
    animation: previewFloat 8s ease-in-out infinite;
}

@keyframes previewFloat {
    0%, 100% { transform: rotateX(2deg) translateY(0); }
    50% { transform: rotateX(1.5deg) translateY(-6px); }
}

.preview-window:hover {
    transform: rotateX(0deg) translateY(-4px);
    box-shadow:
        0 0 0 1px var(--border-subtle),
        0 32px 100px rgba(0, 0, 0, 0.6),
        0 0 80px rgba(52, 152, 219, 0.03),
        0 0 0 0.5px rgba(255, 255, 255, 0.04) inset;
}

.preview-titlebar {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.4);
    border-bottom: 1px solid var(--border);
}

.titlebar-dots {
    display: flex;
    gap: 7px;
}

.dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
}

.dot-close { background: #FF5F57; }
.dot-minimize { background: #FFBD2E; }
.dot-maximize { background: #28CA41; }

.titlebar-title {
    flex: 1;
    text-align: center;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-tertiary);
    margin-right: 50px;
}

.preview-body {
    display: flex;
    min-height: 380px;
}

/* --- Preview Sidebar --- */
.preview-sidebar {
    width: 176px;
    background: rgba(0, 0, 0, 0.3);
    border-right: 1px solid var(--border);
    padding: 12px 8px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 1px;
}

.sidebar-nav-item.active {
    background: var(--fill-hover);
    color: var(--text-primary);
}

.sidebar-section-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 10px;
    font-weight: 600;
    color: var(--text-tertiary);
    letter-spacing: 0.5px;
    padding: 16px 10px 6px;
}

.sidebar-chevron {
    color: var(--text-tertiary);
}

.sidebar-habit {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 12px;
    color: var(--text-primary);
}

.sidebar-habit.selected {
    background: var(--fill-hover);
}

.habit-check {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    color: white;
    font-weight: 700;
    flex-shrink: 0;
}

/* --- Sidebar Bottom --- */
.sidebar-bottom {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-top: auto;
}

.sidebar-badge {
    margin-left: auto;
    font-size: 11px;
    color: var(--text-tertiary);
}

.sidebar-version {
    font-size: 10px;
    color: var(--text-tertiary);
    padding: 4px 10px 0;
}

/* --- Preview Main --- */
.preview-main {
    flex: 1;
    padding: 20px 24px;
    background: var(--bg);
}

/* --- Preview Header Controls --- */
.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.preview-title {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.preview-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.view-toggle {
    display: flex;
    background: var(--fill);
    border-radius: 6px;
    padding: 2px;
    gap: 1px;
}

.toggle-option {
    font-size: 10px;
    font-weight: 500;
    color: var(--text-tertiary);
    padding: 3px 8px;
    border-radius: 4px;
    cursor: default;
}

.toggle-option.active {
    background: var(--fill-hover);
    color: var(--text-primary);
}

.nav-arrows {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-arrow {
    font-size: 14px;
    color: var(--text-tertiary);
    cursor: default;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-today {
    font-size: 10px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 2px 8px;
    background: var(--fill);
    border-radius: 4px;
}

/* --- Preview Grid --- */
.preview-grid {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.grid-header {
    display: grid;
    grid-template-columns: 80px repeat(10, 1fr);
    gap: 4px;
    padding-bottom: 10px;
    margin-bottom: 4px;
}

.grid-header > span:first-child {
    visibility: hidden;
}

.day-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.day-abbr {
    font-size: 9px;
    font-weight: 600;
    color: var(--text-tertiary);
    letter-spacing: 0.3px;
}

.day-num {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.today-col .day-abbr {
    color: var(--text-secondary);
}

.today-num {
    background: var(--accent);
    color: #000 !important;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
}

.grid-row {
    display: grid;
    grid-template-columns: 80px repeat(10, 1fr);
    gap: 4px;
    align-items: center;
    min-height: 36px;
}

.grid-label {
    font-size: 11px;
    font-weight: 500;
    padding-right: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Circle cells */
.grid-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: 1.5px solid rgba(255, 255, 255, 0.08);
    background: transparent;
    justify-self: center;
    transition: transform 0.15s ease, border-color 0.15s ease;
    flex-shrink: 0;
    font-size: 0;
    color: transparent;
}

.grid-cell.filled {
    background: var(--c);
    border-color: var(--c);
    font-size: 11px;
    font-weight: 700;
    color: white;
    animation: cellFadeIn 0.4s var(--ease-out) both;
}

@keyframes cellFadeIn {
    from { opacity: 0; transform: scale(0.7); }
    to { opacity: 1; transform: scale(1); }
}

.grid-row:nth-child(2) .grid-cell.filled { animation-delay: 0.05s; }
.grid-row:nth-child(3) .grid-cell.filled { animation-delay: 0.1s; }
.grid-row:nth-child(4) .grid-cell.filled { animation-delay: 0.15s; }
.grid-row:nth-child(5) .grid-cell.filled { animation-delay: 0.2s; }
.grid-row:nth-child(6) .grid-cell.filled { animation-delay: 0.25s; }
.grid-row:nth-child(7) .grid-cell.filled { animation-delay: 0.3s; }

/* --- Section Layout --- */
.section-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.8px;
    color: var(--text-tertiary);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(32px, 4vw, 46px);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.035em;
}

.text-muted {
    color: var(--text-tertiary);
}

.section-subtitle {
    max-width: 500px;
    margin: 20px auto 0;
    font-size: 15px;
    line-height: 1.75;
    color: var(--text-secondary);
}

/* --- Features --- */
.features {
    position: relative;
    z-index: 1;
    padding: var(--section-padding);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.feature-card {
    padding: 32px;
    background: rgba(13, 13, 13, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--duration-medium) var(--ease-out);
}

.feature-card:hover {
    background: rgba(20, 20, 20, 0.98);
}

.feature-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--fill);
    border-radius: 10px;
    border: 1px solid var(--border);
    color: var(--text-primary);
    margin-bottom: 20px;
}

.feature-title {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.feature-desc {
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-secondary);
}

/* --- Analytics Section --- */
.analytics-section {
    position: relative;
    z-index: 1;
    padding: var(--section-padding);
}

.analytics-preview {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.analytics-cards {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1px;
    background: var(--border);
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.stat-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 22px;
    background: rgba(13, 13, 13, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--duration-medium) var(--ease-out);
}

.stat-card:hover {
    background: rgba(20, 20, 20, 0.98);
}

.stat-label {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.6px;
    color: var(--text-tertiary);
}

.stat-value {
    font-size: 26px;
    font-weight: 700;
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
}

.stat-subtitle {
    font-size: 11px;
    color: var(--text-secondary);
}

/* --- Weekly Chart --- */
.weekly-chart {
    padding: 28px;
    border-radius: 14px;
    background: rgba(13, 13, 13, 0.95);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.chart-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    height: 120px;
}

.chart-bar-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    height: 100%;
    justify-content: flex-end;
}

.chart-bar-group span {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-tertiary);
}

.chart-bar {
    width: 100%;
    max-width: 44px;
    border-radius: 5px;
    background: var(--accent);
    min-height: 4px;
    height: 4px;
    transition: height 0.8s var(--ease-out);
}

.today-bar span {
    color: var(--accent);
    font-weight: 600;
}

/* --- Download --- */
.download {
    position: relative;
    z-index: 1;
    padding: 160px 24px;
    text-align: center;
    overflow: hidden;
}

.download-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(255, 255, 255, 0.02), transparent 60%);
    pointer-events: none;
}

.download-content {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.download-title {
    font-size: clamp(38px, 5vw, 56px);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.08;
    margin-bottom: 14px;
}

.download-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 52px;
    letter-spacing: -0.01em;
}

.download-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 28px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 30px;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all var(--duration-medium) var(--ease-out);
    cursor: pointer;
    min-width: 210px;
}

.download-btn:hover {
    background: rgba(0, 0, 0, 0.6);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.05) inset;
}

.download-btn.mac:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.download-btn-icon {
    color: var(--text-primary);
    flex-shrink: 0;
}

.download-btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
}

.download-btn-small {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 400;
}

.download-btn-large {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.download-note {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* --- Footer --- */
.footer {
    position: relative;
    z-index: 1;
    padding: 28px 24px;
    border-top: 1px solid var(--border);
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 24px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 13px;
}

.footer-copy {
    font-size: 12px;
    color: var(--text-tertiary);
}

/* --- Scroll Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children within feature and stat grids */
.feature-card.fade-in:nth-child(1) { transition-delay: 0s; }
.feature-card.fade-in:nth-child(2) { transition-delay: 0.06s; }
.feature-card.fade-in:nth-child(3) { transition-delay: 0.12s; }
.feature-card.fade-in:nth-child(4) { transition-delay: 0.18s; }
.feature-card.fade-in:nth-child(5) { transition-delay: 0.24s; }
.feature-card.fade-in:nth-child(6) { transition-delay: 0.3s; }

.stat-card.fade-in:nth-child(1) { transition-delay: 0s; }
.stat-card.fade-in:nth-child(2) { transition-delay: 0.06s; }
.stat-card.fade-in:nth-child(3) { transition-delay: 0.12s; }
.stat-card.fade-in:nth-child(4) { transition-delay: 0.18s; }
.stat-card.fade-in:nth-child(5) { transition-delay: 0.24s; }

/* --- Responsive --- */
@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .analytics-cards {
        grid-template-columns: repeat(3, 1fr);
    }

    .preview-sidebar {
        width: 150px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 16px;
    }

    .hero {
        padding: 120px 16px 60px;
    }

    .hero-buttons {
        flex-direction: column;
        margin-bottom: 60px;
    }

    .btn {
        width: 100%;
        max-width: 260px;
        justify-content: center;
    }

    .preview-sidebar {
        display: none;
    }

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

    .analytics-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .analytics-cards .stat-card:nth-child(5) {
        grid-column: span 2;
    }

    .download {
        padding: 100px 16px;
    }

    .download-buttons {
        flex-direction: column;
    }

    .download-btn {
        width: 100%;
        max-width: 260px;
        justify-content: center;
    }

    .nav-links a:not(.nav-cta) {
        display: none;
    }

    .footer-inner {
        flex-direction: column;
        gap: 12px;
    }

    .footer-left {
        flex-direction: column;
        gap: 8px;
    }

    .grid-header,
    .grid-row {
        grid-template-columns: 60px repeat(10, 1fr);
    }

    .grid-label {
        font-size: 10px;
    }

    .grid-cell {
        width: 20px;
        height: 20px;
    }

    .preview-controls {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 34px;
    }

    .section-title {
        font-size: 28px;
    }

    .download-title {
        font-size: 32px;
    }

    .analytics-cards {
        grid-template-columns: 1fr 1fr;
    }

    .analytics-cards .stat-card:nth-child(5) {
        grid-column: span 2;
    }

    .chart-bars {
        gap: 8px;
    }

    .preview-body {
        min-height: 300px;
    }
}