/* ==========================================================================
   SMILEX.VN — ULTIMATE MARTECH & GROWTH OS DESIGN SYSTEM
   Theme: High-Tech Dark Glassmorphism, Cyber Cyan & Electric Purple
   ========================================================================== */

:root {
    /* Color Palette */
    --bg-dark: #06090F;
    --bg-surface: #0B0F19;
    --bg-card: rgba(15, 23, 42, 0.65);
    --bg-card-hover: rgba(26, 38, 66, 0.75);
    --bg-glass: rgba(255, 255, 255, 0.03);
    
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-active: rgba(6, 182, 212, 0.4);
    --border-purple: rgba(139, 92, 246, 0.4);
    
    /* Neon Accents */
    --cyan: #06B6D4;
    --cyan-light: #22D3EE;
    --cyan-glow: rgba(6, 182, 212, 0.35);
    --purple: #8B5CF6;
    --purple-light: #A78BFA;
    --purple-glow: rgba(139, 92, 246, 0.35);
    --emerald: #10B981;
    --emerald-glow: rgba(16, 185, 129, 0.3);
    --amber: #F59E0B;
    --rose: #F43F5E;
    
    /* Typography Colors */
    --text-primary: #F8FAFC;
    --text-secondary: #CBD5E1;
    --text-muted: #94A3B8;
    --text-dim: #64748B;
    
    /* Gradients */
    --grad-primary: linear-gradient(135deg, #06B6D4 0%, #8B5CF6 100%);
    --grad-text: linear-gradient(135deg, #FFFFFF 30%, #38BDF8 70%, #8B5CF6 100%);
    --grad-gold: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
    --grad-card: linear-gradient(180deg, rgba(30, 41, 59, 0.5) 0%, rgba(15, 23, 42, 0.7) 100%);

    /* Fonts */
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Shadow & Effects */
    --shadow-glow-cyan: 0 0 25px rgba(6, 182, 212, 0.25);
    --shadow-glow-purple: 0 0 25px rgba(139, 92, 246, 0.25);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-secondary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(6, 182, 212, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 55%, rgba(139, 92, 246, 0.08) 0%, transparent 45%),
        radial-gradient(circle at 50% 90%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    background-attachment: fixed;
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    line-height: 1.25;
    font-weight: 700;
}

.text-gradient {
    background: var(--grad-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-cyan { color: var(--cyan-light); }
.text-purple { color: var(--purple-light); }
.text-emerald { color: var(--emerald); }
.text-amber { color: var(--amber); }

/* Containers */
.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header & Navigation */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(6, 9, 15, 0.8);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    transition: all 0.3s ease;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.logo-icon {
    width: 42px;
    height: 42px;
    background: var(--grad-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: #fff;
    box-shadow: var(--shadow-glow-cyan);
    font-weight: 800;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.5px;
}

.logo-text span {
    color: var(--cyan);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.nav-link:hover {
    color: var(--cyan-light);
}

.header-ctas {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.phone-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.9rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.phone-link:hover {
    border-color: var(--cyan);
    background: rgba(6, 182, 212, 0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.8rem 1.6rem;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary {
    background: var(--grad-primary);
    color: #FFFFFF;
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(6, 182, 212, 0.5);
    filter: brightness(1.1);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

.btn-outline:hover {
    border-color: var(--cyan);
    background: rgba(6, 182, 212, 0.1);
    color: var(--cyan-light);
    transform: translateY(-2px);
}

.btn-gold {
    background: var(--grad-gold);
    color: #0F172A;
    font-weight: 700;
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
}

.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(245, 158, 11, 0.45);
}

/* Section Common */
.section {
    padding: 6rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 4rem auto;
}

.badge-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.3);
    color: var(--cyan-light);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 1.2rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1.2rem;
    letter-spacing: -0.5px;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
}

/* HERO SECTION */
.hero-section {
    padding-top: 10rem;
    padding-bottom: 5rem;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 3.4rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 2.2rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    margin-bottom: 2.5rem;
}

.hero-highlights {
    display: flex;
    align-items: center;
    gap: 1.8rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-subtle);
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.highlight-icon {
    color: var(--emerald);
    font-size: 1.1rem;
}

/* HERO DASHBOARD DEMO CARD */
.hero-preview-card {
    background: var(--bg-card);
    border: 1px solid var(--border-active);
    border-radius: var(--radius-xl);
    padding: 1.8rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), var(--shadow-glow-cyan);
    backdrop-filter: blur(20px);
    position: relative;
    transform: perspective(1000px) rotateY(-4deg) rotateX(2deg);
    transition: transform 0.5s ease;
}

.hero-preview-card:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.card-header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 1.2rem;
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: 1.5rem;
}

.card-window-dots {
    display: flex;
    gap: 6px;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.dot-red { background: #EF4444; }
.dot-yellow { background: #F59E0B; }
.dot-green { background: #10B981; }

.card-live-tag {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.4);
    color: var(--emerald);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
}

.pulse-dot {
    width: 6px;
    height: 6px;
    background: var(--emerald);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 0.3; transform: scale(0.8); }
    50% { opacity: 1; transform: scale(1.3); }
    100% { opacity: 0.3; transform: scale(0.8); }
}

.dashboard-stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.dash-stat-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    padding: 1rem;
    border-radius: var(--radius-md);
}

.dash-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.3rem;
}

.dash-stat-value {
    font-size: 1.4rem;
    font-family: var(--font-heading);
    font-weight: 800;
    color: var(--text-primary);
}

.dash-stat-trend {
    font-size: 0.75rem;
    color: var(--emerald);
    font-weight: 600;
    margin-top: 0.2rem;
}

/* Chat Feed Simulation */
.chat-sim-box {
    background: rgba(6, 9, 15, 0.8);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1.2rem;
}

.chat-sim-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chat-message {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.8rem;
    font-size: 0.85rem;
}

.chat-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--grad-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: #fff;
    font-weight: 700;
    flex-shrink: 0;
}

.chat-bubble {
    background: rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    padding: 0.6rem 0.9rem;
    color: var(--text-secondary);
    max-width: 85%;
}

.chat-bubble strong {
    color: var(--cyan-light);
}

/* STATS BAR SECTION */
.stats-bar-section {
    padding: 2.5rem 0;
    background: rgba(11, 15, 25, 0.6);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-num {
    font-size: 2.8rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* 4 PILLARS / SOLUTIONS SECTION */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.solution-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--grad-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.solution-card:hover {
    border-color: var(--border-active);
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4), var(--shadow-glow-cyan);
}

.solution-card:hover::before {
    opacity: 1;
}

.card-icon-box {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 1.5rem;
    color: var(--cyan-light);
}

.solution-card.purple .card-icon-box {
    background: rgba(139, 92, 246, 0.1);
    border-color: rgba(139, 92, 246, 0.3);
    color: var(--purple-light);
}

.solution-card.emerald .card-icon-box {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--emerald);
}

.solution-card.amber .card-icon-box {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
    color: var(--amber);
}

.solution-title {
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.solution-desc {
    color: var(--text-muted);
    font-size: 0.98rem;
    margin-bottom: 1.5rem;
    line-height: 1.65;
}

.feature-list {
    list-style: none;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.6rem;
}

.feature-check {
    color: var(--cyan);
    font-weight: 800;
}

/* INTERACTIVE ROI CALCULATOR */
.calculator-box {
    background: var(--bg-card);
    border: 1px solid var(--border-active);
    border-radius: var(--radius-xl);
    padding: 3rem;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5), var(--shadow-glow-purple);
}

.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
    align-items: center;
}

.calc-inputs-group {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.input-field-block {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.input-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.input-label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.input-val-badge {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--cyan-light);
    background: rgba(6, 182, 212, 0.12);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.range-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 15px var(--cyan);
    cursor: pointer;
    transition: transform 0.15s ease;
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.25);
}

/* Calculator Output Results */
.calc-results-card {
    background: rgba(6, 9, 15, 0.9);
    border: 1px solid var(--border-purple);
    border-radius: var(--radius-lg);
    padding: 2.2rem;
    text-align: center;
    position: relative;
}

.results-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--grad-primary);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 800;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.result-main-num {
    font-size: 3.2rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: var(--emerald);
    line-height: 1.1;
    margin: 1.2rem 0 0.4rem 0;
}

.result-main-label {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

.results-breakdown-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    text-align: left;
    margin-bottom: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-subtle);
}

.breakdown-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 0.9rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
}

.bk-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 0.2rem;
}

.bk-val {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* CASE STUDY SPOTLIGHT */
.case-study-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 3rem;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.case-logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--amber);
    margin-bottom: 1.2rem;
}

.case-quote {
    font-size: 1.25rem;
    color: var(--text-primary);
    font-style: italic;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.case-metrics-row {
    display: flex;
    gap: 2rem;
}

.case-metric {
    display: flex;
    flex-direction: column;
}

.case-metric-val {
    font-size: 2rem;
    font-weight: 800;
    color: var(--cyan-light);
    font-family: var(--font-heading);
}

.case-metric-lbl {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* PRICING PACKAGES */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.price-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s ease;
    position: relative;
}

.price-card.featured {
    border-color: var(--cyan);
    box-shadow: 0 15px 40px rgba(6, 182, 212, 0.2);
    transform: scale(1.04);
    background: var(--bg-card-hover);
}

.featured-ribbon {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--grad-primary);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 800;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    text-transform: uppercase;
}

.price-name {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.price-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    min-height: 42px;
}

.price-val {
    font-size: 2.4rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: var(--text-primary);
    margin-bottom: 1.8rem;
}

.price-val span {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 400;
}

.price-features {
    list-style: none;
    margin-bottom: 2rem;
}

.price-feature-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
}

/* MODAL FORM */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(6, 9, 15, 0.85);
    backdrop-filter: blur(12px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    background: var(--bg-surface);
    border: 1px solid var(--border-active);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 540px;
    padding: 2.5rem;
    box-shadow: 0 25px 60px rgba(0,0,0,0.8), var(--shadow-glow-cyan);
    position: relative;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal-backdrop.active .modal-container {
    transform: scale(1);
}

.modal-close-btn {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.modal-close-btn:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.15);
}

.modal-title {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.modal-desc {
    color: var(--text-muted);
    font-size: 0.92rem;
    margin-bottom: 1.8rem;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.form-input {
    width: 100%;
    padding: 0.8rem 1rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: border-color 0.2s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--cyan);
    background: rgba(6, 182, 212, 0.05);
}

/* FOOTER */
.app-footer {
    background: rgba(6, 9, 15, 0.95);
    border-top: 1px solid var(--border-subtle);
    padding: 4rem 0 2rem 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 1rem;
    line-height: 1.6;
}

.footer-col-title {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 1.2rem;
}

.footer-links {
    list-style: none;
}

.footer-link-item {
    margin-bottom: 0.6rem;
}

.footer-link-item a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.footer-link-item a:hover {
    color: var(--cyan-light);
}

.footer-bottom {
    border-top: 1px solid var(--border-subtle);
    padding-top: 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-dim);
}

/* RESPONSIVE DESIGN */
@media (max-width: 1024px) {
    .hero-grid, .calc-grid, .case-study-card {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    .price-card.featured {
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hero-title {
        font-size: 2.4rem;
    }
    .solutions-grid, .stats-grid, .footer-grid {
        grid-template-columns: 1fr;
    }
}