/* ==========================================================================
   Habify Coming Soon — Design System (Chuẩn docs/UI-STYLE-GUIDE.md)
   ========================================================================== */

:root {
    --bg-canvas: #f8fafc;
    --surface-card: rgba(255, 255, 255, 0.90);
    --surface-subcard: rgba(248, 250, 252, 0.88);
    --border-card: rgba(226, 232, 240, 0.95);
    --border-subcard: #e2e8f0;
    --shadow-card: 0 20px 45px -15px rgba(15, 23, 42, 0.08);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --accent-amber: #f59e0b;
    --accent-orange: #ea580c;
    --accent-indigo: #4f46e5;
    --badge-bg: #fffbeb;
    --badge-text: #b45309;
    --badge-border: #fde68a;
    --success-bg: #ecfdf5;
    --success-text: #047857;
    --success-border: #a7f3d0;
    --btn-secondary-bg: rgba(255, 255, 255, 0.85);
    --btn-secondary-border: #cbd5e1;
    --btn-secondary-hover: #f1f5f9;
    --progress-track: #e2e8f0;
}

html.dark {
    --bg-canvas: #090d16;
    --surface-card: rgba(15, 23, 42, 0.78);
    --surface-subcard: rgba(15, 23, 42, 0.55);
    --border-card: rgba(255, 255, 255, 0.10);
    --border-subcard: rgba(255, 255, 255, 0.08);
    --shadow-card: 0 25px 50px -12px rgba(0, 0, 0, 0.65);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --badge-bg: rgba(245, 158, 11, 0.12);
    --badge-text: #fbbf24;
    --badge-border: rgba(245, 158, 11, 0.30);
    --success-bg: rgba(16, 185, 129, 0.12);
    --success-text: #34d399;
    --success-border: rgba(16, 185, 129, 0.30);
    --btn-secondary-bg: rgba(15, 23, 42, 0.65);
    --btn-secondary-border: rgba(255, 255, 255, 0.14);
    --btn-secondary-hover: rgba(30, 41, 59, 0.85);
    --progress-track: rgba(255, 255, 255, 0.08);
}

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

html {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body.habify-canvas {
    position: relative;
    min-height: 100vh;
    background-color: var(--bg-canvas);
    color: var(--text-primary);
    background-image:
        radial-gradient(circle at 15% 15%, rgba(245, 158, 11, 0.10) 0%, transparent 45%),
        radial-gradient(circle at 85% 20%, rgba(79, 70, 229, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 90%, rgba(234, 88, 12, 0.07) 0%, transparent 50%);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow-x: hidden;
    transition: background-color 0.25s ease, color 0.25s ease;
}

html.dark body.habify-canvas {
    background-image:
        radial-gradient(circle at 15% 15%, rgba(245, 158, 11, 0.14) 0%, transparent 45%),
        radial-gradient(circle at 85% 20%, rgba(79, 70, 229, 0.18) 0%, transparent 50%),
        radial-gradient(circle at 50% 90%, rgba(234, 88, 12, 0.10) 0%, transparent 50%);
}

body.habify-canvas::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(to right, rgba(15, 23, 42, 0.035) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(15, 23, 42, 0.035) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse at center, black 40%, transparent 85%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 85%);
    pointer-events: none;
    z-index: 0;
}

html.dark body.habify-canvas::before {
    background-image:
        linear-gradient(to right, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
}

/* Layout Container */
.page-shell {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1040px;
    margin: 0 auto;
    padding: 1.5rem 1.25rem 2.5rem;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    gap: 2rem;
}

/* Header */
.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.brand-identity {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    text-decoration: none;
    color: inherit;
}

.habify-logo-box {
    width: 48px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.875rem;
    background: linear-gradient(145deg, #0f172a, #1e293b);
    border: 1px solid rgba(245, 158, 11, 0.38);
    box-shadow: 0 10px 25px -5px rgba(245, 158, 11, 0.25);
    flex-shrink: 0;
    padding: 8px;
}

.habify-logo-box img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 0.5rem;
}

.brand-meta {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.brand-name-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brand-name {
    font-size: 1.1875rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

.ecosystem-pill {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.1875rem 0.5rem;
    border-radius: 9999px;
    background: var(--badge-bg);
    color: var(--badge-text);
    border: 1px solid var(--badge-border);
}

.brand-domain {
    font-size: 0.78125rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    height: 38px;
    padding: 0 0.875rem;
    border-radius: 0.625rem;
    background: var(--btn-secondary-bg);
    border: 1px solid var(--btn-secondary-border);
    color: var(--text-secondary);
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    backdrop-filter: blur(12px);
}

.theme-toggle:hover {
    background: var(--btn-secondary-hover);
    color: var(--text-primary);
}

.theme-toggle svg {
    width: 16px;
    height: 16px;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1.5rem;
}

/* Glass Hero Card */
.hero-card {
    position: relative;
    background: var(--surface-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-card);
    border-radius: 1.375rem;
    box-shadow: var(--shadow-card);
    padding: 2.5rem 2.25rem;
    overflow: hidden;
}

.hero-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #f59e0b 0%, #ea580c 55%, #4f46e5 100%);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.875rem;
    border-radius: 9999px;
    background: var(--badge-bg);
    border: 1px solid var(--badge-border);
    color: var(--badge-text);
    font-size: 0.78125rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #f59e0b;
    box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.7);
    animation: pulse-amber 2s infinite;
}

@keyframes pulse-amber {
    0% {
        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.65);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(245, 158, 11, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(245, 158, 11, 0);
    }
}

.hero-category {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-amber);
    margin-bottom: 0.5rem;
}

.hero-title {
    font-size: clamp(1.625rem, 3.6vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.hero-title .text-gradient {
    background: linear-gradient(135deg, #f59e0b 0%, #ea580c 65%, #6366f1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1rem;
    line-height: 1.65;
    color: var(--text-secondary);
    max-width: 760px;
    margin-bottom: 1.75rem;
}

/* Launch Progress Section */
.progress-box {
    background: var(--surface-subcard);
    border: 1px solid var(--border-subcard);
    border-radius: 1rem;
    padding: 1.25rem 1.375rem;
    margin-bottom: 1.75rem;
}

.progress-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.625rem;
}

.progress-label {
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--text-primary);
}

.progress-percent {
    font-size: 0.8125rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-amber);
}

.progress-bar-track {
    width: 100%;
    height: 8px;
    border-radius: 9999px;
    background: var(--progress-track);
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-bar-fill {
    height: 100%;
    border-radius: 9999px;
    background: linear-gradient(90deg, #f59e0b 0%, #ea580c 70%, #4f46e5 100%);
    transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.milestones-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.milestone-item {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.78125rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.milestone-item.done {
    color: var(--success-text);
}

.milestone-item.active {
    color: var(--badge-text);
    font-weight: 600;
}

.milestone-icon {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6875rem;
    flex-shrink: 0;
}

.milestone-item.done .milestone-icon {
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    color: var(--success-text);
}

.milestone-item.active .milestone-icon {
    background: var(--badge-bg);
    border: 1px solid var(--badge-border);
    color: var(--badge-text);
}

.milestone-item.upcoming .milestone-icon {
    background: var(--progress-track);
    color: var(--text-muted);
}

/* Feature Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.875rem;
}

.feature-card {
    background: var(--surface-subcard);
    border: 1px solid var(--border-subcard);
    border-radius: 0.9375rem;
    padding: 1.125rem 1.25rem;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-2px);
    border-color: rgba(245, 158, 11, 0.4);
}

.feature-icon-wrap {
    width: 34px;
    height: 34px;
    border-radius: 0.5rem;
    background: var(--badge-bg);
    border: 1px solid var(--badge-border);
    color: var(--badge-text);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
    font-size: 0.9375rem;
    font-weight: 700;
}

.feature-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.375rem;
    letter-spacing: -0.01em;
}

.feature-desc {
    font-size: 0.8125rem;
    line-height: 1.55;
    color: var(--text-secondary);
}

/* CTA Actions */
.cta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-subcard);
}

.cta-buttons {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6875rem 1.25rem;
    border-radius: 0.6875rem;
    background: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
    color: #ffffff;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 10px 20px -8px rgba(234, 88, 12, 0.55);
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #fbbf24 0%, #f97316 100%);
    transform: translateY(-1px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6875rem 1.125rem;
    border-radius: 0.6875rem;
    background: var(--btn-secondary-bg);
    border: 1px solid var(--btn-secondary-border);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    background: var(--btn-secondary-hover);
}

.cta-support-note {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.cta-support-note a {
    color: var(--accent-amber);
    text-decoration: none;
    font-weight: 600;
}

.cta-support-note a:hover {
    text-decoration: underline;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border-subcard);
    padding-top: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.78125rem;
    color: var(--text-muted);
}

.footer-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.footer-company {
    font-weight: 600;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.15s ease;
}

.footer-links a:hover {
    color: var(--accent-amber);
}

.footer-legal {
    line-height: 1.5;
}

/* Responsive */
@media (max-width: 840px) {
    .features-grid {
        grid-template-columns: 1fr;
    }

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

    .hero-card {
        padding: 1.75rem 1.375rem;
    }
}

@media (max-width: 520px) {
    .milestones-grid {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        width: 100%;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }
}