/* ═══════════════════════════════════════════════════════════
   Ai Apex — Design System & Landing Page Styles
   ═══════════════════════════════════════════════════════════ */

/* ─── TOKENS ─────────────────────────────────────────────── */
:root {
    --color-primary:        #2563EB;
    --color-primary-light:  #3B82F6;
    --color-primary-dark:   #1D4ED8;
    --color-primary-soft:   #EFF6FF;
    --color-accent:         #06B6D4;
    --color-accent-light:   #CFFAFE;

    --color-bg:             #FFFFFF;
    --color-bg-secondary:   #F8FAFC;
    --color-bg-tertiary:    #F1F5F9;
    --color-border:         #E2E8F0;
    --color-border-light:   #F1F5F9;

    --color-text:           #0F172A;
    --color-text-secondary: #475569;
    --color-text-muted:     #94A3B8;

    --color-success:        #10B981;
    --color-warning:        #F59E0B;
    --color-error:          #EF4444;

    --radius-sm:   6px;
    --radius-md:   10px;
    --radius-lg:   16px;
    --radius-xl:   24px;
    --radius-full: 9999px;

    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    --space-20: 80px;
    --space-24: 96px;

    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --shadow-card: 0 1px 3px rgba(15,23,42,.06), 0 1px 2px rgba(15,23,42,.04);
    --transition: 0.18s ease;
}

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

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

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

img, svg { display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul, ol { list-style: none; }

/* ─── LAYOUT ──────────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ─── TYPOGRAPHY ──────────────────────────────────────────── */
.section-header {
    text-align: center;
    margin-bottom: var(--space-8);
}
.section-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
    margin-top: var(--space-3);
    letter-spacing: -0.02em;
}
.section-desc {
    font-size: 17px;
    color: var(--color-text-secondary);
    margin-top: var(--space-3);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

/* ─── LOGO ────────────────────────────────────────────────── */
.logo {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.03em;
    display: inline-flex;
    align-items: center;
    gap: 1px;
}
.logo__ai   { color: #94A3B8; }
.logo__apex { color: var(--color-primary); }

/* ─── BADGE ───────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 500;
}
.badge-blue {
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
    border: 1px solid #BFDBFE;
}

/* ─── BUTTONS ─────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 10px var(--space-5);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    border: 1.5px solid transparent;
    transition: background var(--transition), color var(--transition), border-color var(--transition), opacity var(--transition);
    white-space: nowrap;
    line-height: 1;
}
.btn-lg { padding: 13px var(--space-6); font-size: 15px; }
.btn-sm { padding: 7px var(--space-3); font-size: 13px; }

.btn-primary  { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); }

.btn-secondary { background: var(--color-bg-tertiary); color: var(--color-text); border-color: var(--color-border); }
.btn-secondary:hover { background: var(--color-border); }

.btn-ghost { background: transparent; color: var(--color-primary); }
.btn-ghost:hover { background: var(--color-primary-soft); }

.btn-outline-white {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.4);
}
.btn-outline-white:hover { background: rgba(255,255,255,0.1); }

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

/* ─── HEADER ──────────────────────────────────────────────── */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
    transition: border-color var(--transition);
}
.header.scrolled { border-bottom-color: var(--color-border); }

.header__inner {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    height: 64px;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    margin-left: var(--space-6);
}
.nav__link {
    padding: 6px var(--space-3);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}
.nav__link:hover { color: var(--color-text); background: var(--color-bg-tertiary); }

.header__actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.burger {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    padding: var(--space-2);
    margin-left: auto;
}

/* ─── HERO ────────────────────────────────────────────────── */
.hero {
    position: relative;
    overflow: hidden;
    padding: var(--space-16) 0 var(--space-16);
    background: var(--color-bg);
}

.hero__bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(37,99,235,.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37,99,235,.05) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
    pointer-events: none;
}

.hero__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    opacity: 0.35;
}
.hero__orb--blue {
    width: 600px; height: 600px;
    background: radial-gradient(circle, #3B82F6, transparent 70%);
    top: -200px; right: -100px;
}
.hero__orb--cyan {
    width: 400px; height: 400px;
    background: radial-gradient(circle, #06B6D4, transparent 70%);
    bottom: -100px; left: -80px;
}

.hero__inner {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

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

.hero__title {
    font-size: clamp(36px, 5.5vw, 64px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--color-text);
}
.hero__title-accent {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__desc {
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-top: var(--space-5);
    line-height: 1.7;
    max-width: 480px;
}

.hero__cta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-top: var(--space-8);
    flex-wrap: wrap;
}

.hero__stats {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    margin-top: var(--space-10);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-border);
}
.hero__stat { display: flex; flex-direction: column; }
.hero__stat-num {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1;
}
.hero__stat-label {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-top: 4px;
}
.hero__stat-divider {
    width: 1px;
    height: 36px;
    background: var(--color-border);
}

/* Hero — floating card */
.hero__visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.hero__card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    width: 100%;
    max-width: 460px;
    box-shadow: 0 20px 60px rgba(15,23,42,.1), 0 4px 12px rgba(15,23,42,.06);
    animation: heroCardFloat 4s ease-in-out infinite;
}

@keyframes heroCardFloat {
    0%, 100% { transform: translateY(0px); }
    50%       { transform: translateY(-10px); }
}

.hero__card-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}
.hero__card-dots {
    display: flex;
    gap: 6px;
}
.hero__card-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-border);
}
.hero__card-dots span:first-child  { background: #FBBF24; }
.hero__card-dots span:nth-child(2) { background: #34D399; }
.hero__card-dots span:last-child   { background: #60A5FA; }
.hero__card-title {
    font-size: 12px;
    color: var(--color-text-muted);
    font-weight: 500;
    flex: 1;
    text-align: center;
    margin-right: 34px;
}

.hero__card-body { padding: var(--space-5); }

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

.hero__chat-msg {
    font-size: 13.5px;
    line-height: 1.6;
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    max-width: 90%;
}
.hero__chat-msg--user {
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}
.hero__chat-msg--ai {
    background: var(--color-bg-secondary);
    color: var(--color-text);
    align-self: flex-start;
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    border-bottom-left-radius: 4px;
}
.hero__chat-avatar {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    margin-top: 2px;
}
.hero__chat-text { color: var(--color-text); }
.hero__chat-cursor {
    display: inline-block;
    width: 2px;
    height: 14px;
    background: var(--color-primary);
    margin-left: 2px;
    vertical-align: middle;
    animation: blink 1s step-end infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero__card-input {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-top: var(--space-4);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
}
.hero__card-input-inner {
    flex: 1;
    font-size: 13px;
    color: var(--color-text-muted);
}
.hero__card-send {
    background: var(--color-primary);
    border: none;
    color: #fff;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Hero — floating badges */
.hero__float-badge {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 8px 14px;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-secondary);
    box-shadow: 0 4px 16px rgba(15,23,42,.08);
}
.hero__float-badge--1 {
    bottom: 48px;
    left: -20px;
    animation: heroCardFloat 4s ease-in-out 0.8s infinite;
}
.hero__float-badge--2 {
    top: 32px;
    right: -24px;
    animation: heroCardFloat 4s ease-in-out 1.6s infinite;
}

/* ─── USE CASES ───────────────────────────────────────────── */
.usecases {
    padding: var(--space-16) 0 var(--space-20);
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

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

/* Block */
.usecase-block {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.usecase-block__header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.usecase-block__icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.usecase-block__icon--image { background: #ECFEFF; color: #0891B2; }
.usecase-block__icon--text  { background: #EFF6FF; color: var(--color-primary); }

.usecase-block__title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.3;
    margin-bottom: 4px;
}
.usecase-block__desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Platforms */
.usecase-platforms {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.usecase-platform {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.usecase-platform__logo {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.usecase-platform__logo--yt    { background: #FF0000; color: #fff; }
.usecase-platform__logo--rt    { background: #00B4FF; color: #fff; }
.usecase-platform__logo--vk    { background: #0077FF; color: #fff; }
.usecase-platform__logo--avito { background: #00AAFF; color: #fff; }

.usecase-platform__info {
    display: flex;
    flex-direction: column;
    gap: 1px;
    flex: 1;
}
.usecase-platform__name {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
}
.usecase-platform__size {
    font-size: 11px;
    color: var(--color-text-muted);
}

.usecase-platform__badge {
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
    background: #ECFEFF;
    color: #0891B2;
    border: 1px solid #A5F3FC;
    white-space: nowrap;
}
.usecase-platform__badge--text {
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
    border-color: #BFDBFE;
}

/* Cover example */
.usecase-block__example { border-radius: var(--radius-lg); overflow: hidden; }

.usecase-example-cover__thumb {
    position: relative;
    height: 140px;
    background: linear-gradient(135deg, #0F172A 0%, #1E3A5F 50%, #0F172A 100%);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    padding: var(--space-4);
}
.usecase-example-cover__gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 70% 30%, rgba(37,99,235,.4) 0%, transparent 60%),
                radial-gradient(ellipse at 20% 70%, rgba(6,182,212,.3) 0%, transparent 55%);
}
.usecase-example-cover__play {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,.15);
    border: 1.5px solid rgba(255,255,255,.3);
    display: flex;
    align-items: center;
    justify-content: center;
}
.usecase-example-cover__text {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.usecase-example-cover__label {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
}
.usecase-example-cover__sub {
    font-size: 12px;
    color: rgba(255,255,255,.7);
}

.usecase-example-cover__meta {
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}
.usecase-example-cover__prompt {
    display: flex;
    align-items: flex-start;
    gap: 6px;
    font-size: 12px;
    color: var(--color-text-secondary);
    flex: 1;
    line-height: 1.4;
}
.usecase-example-cover__prompt svg { flex-shrink: 0; margin-top: 2px; color: var(--color-text-muted); }
.usecase-example-cover__stats {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

/* Chat example */
.usecase-chat {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}

.usecase-chat__msg {
    display: flex;
    gap: var(--space-3);
    font-size: 13px;
    line-height: 1.6;
}
.usecase-chat__msg--user {
    padding: var(--space-3) var(--space-4);
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
    border-radius: var(--radius-md);
    border-bottom-right-radius: 4px;
    align-self: flex-end;
    max-width: 90%;
    margin-left: auto;
}
.usecase-chat__msg--ai {
    align-items: flex-start;
    max-width: 100%;
}
.usecase-chat__avatar {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
    margin-top: 2px;
}
.usecase-chat__bubble {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    border-top-left-radius: 4px;
    padding: var(--space-3) var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    font-size: 13px;
    color: var(--color-text);
}
.usecase-chat__tags {
    font-size: 12px;
    color: var(--color-primary);
    margin-top: var(--space-1);
}

.usecase-chat__stats {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding-top: var(--space-2);
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-1);
}

/* Shared stat badge */
.usecase-stat {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 500;
    color: var(--color-text-muted);
}
.usecase-stat--green { color: #059669; }

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

/* ─── FEATURES ────────────────────────────────────────────── */
.features {
    position: relative;
    padding: var(--space-10) 0 var(--space-16);
    overflow: hidden;
}

.features__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    background: linear-gradient(180deg, var(--color-bg) 0%, #F1F5F9 50%, var(--color-bg) 100%);
    pointer-events: none;
}

.features .section-header {
    position: relative;
    z-index: 1;
}
.features .section-title { color: #0F172A; }
.features .section-desc  { color: #334155; }

.features__grid {
    position: relative;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
}
.features__grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

/* Glassmorphism cards */
.feature-card {
    position: relative;
    background: rgba(255,255,255,0.72);
    border: 1px solid rgba(255,255,255,0.9);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: transform var(--transition), border-color var(--transition);
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.5) 0%, rgba(255,255,255,0) 100%);
    pointer-events: none;
}
.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(37,99,235,.2);
}
.feature-card--wide {
    grid-column: span 2;
    display: flex;
    align-items: flex-start;
    gap: var(--space-6);
}
.feature-card--wide .feature-card__icon { flex-shrink: 0; }

.feature-card__icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-5);
}
.feature-card--wide .feature-card__icon { margin-bottom: 0; margin-top: 4px; }

.feature-card__icon--blue   { background: #EFF6FF; color: var(--color-primary); }
.feature-card__icon--cyan   { background: #ECFEFF; color: #0891B2; }
.feature-card__icon--violet { background: #F5F3FF; color: #7C3AED; }
.feature-card__icon--green  { background: #ECFDF5; color: #059669; }
.feature-card__icon--orange { background: #FFF7ED; color: #D97706; }

.feature-card__title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-3);
    line-height: 1.3;
}
.feature-card__desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.65;
}
.feature-card__tag {
    display: inline-block;
    margin-top: var(--space-4);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
}

/* ─── UI MOCKUP SECTION ───────────────────────────────────── */
.ui-preview {
    padding: var(--space-16) 0 var(--space-20);
    background: var(--color-bg);
}

.ui-mockup {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 8px 40px rgba(15,23,42,.08);
}

/* Top browser bar */
.ui-mockup__topbar {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: 10px var(--space-5);
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}
.ui-mockup__dots {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}
.ui-mockup__dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.ui-mockup__dots span:nth-child(1) { background: #FBBF24; }
.ui-mockup__dots span:nth-child(2) { background: #34D399; }
.ui-mockup__dots span:nth-child(3) { background: #60A5FA; }
.ui-mockup__url {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 5px 12px;
    font-size: 12px;
    color: var(--color-text-muted);
    max-width: 320px;
    margin: 0 auto;
}
.ui-mockup__topbar-actions { margin-left: auto; }
.ui-mockup__avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-size: 10px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* App body */
.ui-mockup__body {
    display: grid;
    grid-template-columns: 200px 1fr 220px;
    min-height: 520px;
    background: var(--color-bg);
}

/* Sidebar */
.ui-mockup__sidebar {
    border-right: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    display: flex;
    flex-direction: column;
    padding: var(--space-5) var(--space-4);
    gap: var(--space-5);
}
.ui-mockup__sidebar-logo {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.03em;
    padding: 0 var(--space-2);
}
.ui-mockup__sidenav {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.ui-mockup__sidenav-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 8px var(--space-3);
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: default;
    transition: background var(--transition), color var(--transition);
}
.ui-mockup__sidenav-item--active {
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
}
.ui-mockup__sidebar-bottom { margin-top: auto; }
.ui-mockup__credits {
    padding: var(--space-3);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.ui-mockup__credits-label { font-size: 11px; font-weight: 600; color: var(--color-text-secondary); text-transform: uppercase; letter-spacing: 0.04em; }
.ui-mockup__credits-bar {
    height: 4px;
    background: var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
}
.ui-mockup__credits-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-full);
}
.ui-mockup__credits-val { font-size: 11px; color: var(--color-text-muted); }

/* Main area */
.ui-mockup__main {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.ui-mockup__toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
}
.ui-mockup__toolbar-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}
.ui-mockup__model-select {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: default;
}

.ui-mockup__input-area {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--color-border);
}
.ui-mockup__prompt-box {
    background: var(--color-primary-soft);
    border: 1px solid #BFDBFE;
    border-radius: var(--radius-md);
    padding: var(--space-4) var(--space-5);
}
.ui-mockup__prompt-text {
    font-size: 13.5px;
    color: var(--color-primary-dark);
    line-height: 1.6;
}
.ui-mockup__prompt-meta {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-3);
    font-size: 11px;
    color: #93C5FD;
}

.ui-mockup__result {
    flex: 1;
    padding: var(--space-5) var(--space-6);
    overflow: auto;
}
.ui-mockup__result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}
.ui-mockup__result-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    background: #ECFDF5;
    border: 1px solid #A7F3D0;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
    color: #065F46;
}
.ui-mockup__result-actions {
    display: flex;
    gap: var(--space-2);
}
.ui-mockup__action-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 5px 10px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: default;
}
.ui-mockup__result-text {
    font-size: 13.5px;
    line-height: 1.75;
    color: var(--color-text);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.ui-mockup__new-prompt {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg);
}
.ui-mockup__new-prompt-inner {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg);
}
.ui-mockup__new-prompt-placeholder {
    flex: 1;
    font-size: 13px;
    color: var(--color-text-muted);
}
.ui-mockup__new-prompt-btns {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}
.ui-mockup__hotkey {
    font-size: 11px;
    color: var(--color-text-muted);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 2px 6px;
}
.ui-mockup__send-btn {
    width: 28px;
    height: 28px;
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    cursor: default;
}

/* History panel */
.ui-mockup__history {
    border-left: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
    padding: var(--space-5) var(--space-4);
}
.ui-mockup__history-title {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
    padding: 0 var(--space-2);
}
.ui-mockup__history-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.ui-mockup__history-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    border-radius: var(--radius-md);
    cursor: default;
    transition: background var(--transition);
}
.ui-mockup__history-item--active { background: var(--color-bg); border: 1px solid var(--color-border); }
.ui-mockup__history-type {
    width: 26px;
    height: 26px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}
.ui-mockup__history-type--text  { background: #EFF6FF; color: var(--color-primary-dark); }
.ui-mockup__history-type--image { background: #ECFEFF; color: #0891B2; }
.ui-mockup__history-info { display: flex; flex-direction: column; gap: 2px; overflow: hidden; }
.ui-mockup__history-name {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.ui-mockup__history-time { font-size: 11px; color: var(--color-text-muted); }

/* ─── CTA BANNER ──────────────────────────────────────────── */
.cta-banner {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, #0EA5E9 100%);
    padding: var(--space-16) 0;
}
.cta-banner__inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-12);
}
.cta-banner__content { flex: 1; }
.cta-banner__title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
}
.cta-banner__desc {
    font-size: 18px;
    color: rgba(255,255,255,.8);
    margin-top: var(--space-3);
}
.cta-banner__actions {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-8);
    flex-wrap: wrap;
}
.cta-banner__visual {
    flex-shrink: 0;
    width: 200px;
    height: 200px;
    position: relative;
}
.cta-banner__orb {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255,255,255,.12);
    border: 1px solid rgba(255,255,255,.2);
    animation: heroCardFloat 4s ease-in-out infinite;
}

/* ─── FOOTER ──────────────────────────────────────────────── */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
}
.footer__inner {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: var(--space-16);
    padding-top: var(--space-16);
    padding-bottom: var(--space-12);
}

.footer__tagline {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-top: var(--space-3);
}
.footer__socials {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-5);
}
.footer__social {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: color var(--transition), border-color var(--transition), background var(--transition);
}
.footer__social:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
}

.footer__nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
}
.footer__nav-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-4);
}
.footer__nav-link {
    display: block;
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-3);
    transition: color var(--transition);
}
.footer__nav-link:hover { color: var(--color-primary); }

.footer__bottom {
    border-top: 1px solid var(--color-border);
    padding: var(--space-5) 0;
}
.footer__bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.footer__copy, .footer__made {
    font-size: 13px;
    color: var(--color-text-muted);
}

/* ─── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 1024px) {
    .features__grid { grid-template-columns: repeat(3, 1fr); }
    .footer__nav { grid-template-columns: repeat(2, 1fr); gap: var(--space-8) var(--space-6); }
    .ui-mockup__body { grid-template-columns: 180px 1fr; }
    .ui-mockup__history { display: none; }
}

@media (max-width: 768px) {
    .nav, .header__actions { display: none; }
    .burger { display: flex; }

    .hero__inner {
        grid-template-columns: 1fr;
        gap: var(--space-12);
        text-align: center;
    }
    .hero__desc  { margin: var(--space-5) auto 0; }
    .hero__cta   { justify-content: center; }
    .hero__stats { justify-content: center; }
    .hero__visual { display: none; }

    .features__grid,
    .features__grid--3 { grid-template-columns: 1fr; }

    .ui-mockup__body { grid-template-columns: 1fr; }
    .ui-mockup__sidebar { display: none; }
    .ui-mockup__history { display: none; }

    .cta-banner__visual { display: none; }

    .footer__inner { grid-template-columns: 1fr; gap: var(--space-10); }
    .footer__nav { grid-template-columns: repeat(2, 1fr); }
    .footer__bottom-inner { flex-direction: column; gap: var(--space-2); text-align: center; }
}

@media (max-width: 480px) {
    .footer__nav { grid-template-columns: 1fr; }
    .hero__stats { flex-direction: column; align-items: flex-start; gap: var(--space-4); }
    .hero__stat-divider { display: none; }
}

/* ─── UTILITIES ───────────────────────────────────────────── */
.sr-only {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); border: 0;
}