/* ===== CSS Variables / Theme ===== */
:root {
    --primary: #6C3CE1;
    --primary-dark: #5228B5;
    --primary-light: #8B5CF6;
    --primary-glow: rgba(108, 60, 225, 0.3);
    --secondary: #00D4AA;
    --accent: #F59E0B;
    --bg-dark: #0A0A1A;
    --bg-card: #12122A;
    --bg-light: #F5F3FF;
    --bg-white: #FFFFFF;
    --text-dark: #1A1A2E;
    --text-body: #4A4A6A;
    --text-light: #8A8AA0;
    --text-white: #FFFFFF;
    --border: #E2E0F0;
    --radius: 16px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(108, 60, 225, 0.08);
    --shadow-lg: 0 8px 48px rgba(108, 60, 225, 0.12);
    --shadow-xl: 0 20px 60px rgba(108, 60, 225, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans Thai', 'Inter', -apple-system, sans-serif;
    color: var(--text-body);
    background: var(--bg-white);
    line-height: 1.7;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-padding {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.15rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--primary-glow);
}

.btn-outline {
    background: transparent;
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.btn-lg {
    padding: 18px 44px;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 10px 24px;
    font-size: 0.9rem;
}

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

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--text-dark);
}

.logo-icon {
    font-size: 1.8rem;
}

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

.nav-link {
    position: relative;
    font-weight: 500;
    color: var(--text-body);
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #0A0A1A 0%, #1A0A2E 50%, #0A1A2E 100%);
    padding: 120px 0 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(108, 60, 225, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0, 212, 170, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 100%, rgba(108, 60, 225, 0.05) 0%, transparent 40%);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    color: white;
    margin-bottom: 24px;
}

.hero-text p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 540px;
    margin-bottom: 36px;
    line-height: 1.8;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(108, 60, 225, 0.2);
    border: 1px solid rgba(108, 60, 225, 0.3);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-actions .btn-outline {
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
}

.hero-actions .btn-outline:hover {
    background: white;
    color: var(--text-dark);
}

/* ===== AI Brain Animation ===== */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.ai-brain {
    position: relative;
    width: 320px;
    height: 320px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.brain-core {
    font-size: 6rem;
    z-index: 2;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.brain-ring {
    position: absolute;
    border-radius: 50%;
    border: 2px solid;
    opacity: 0.4;
    animation: spin 8s linear infinite;
}

.ring-1 {
    width: 280px;
    height: 280px;
    border-color: var(--primary-light);
    animation-duration: 8s;
}

.ring-2 {
    width: 220px;
    height: 220px;
    border-color: var(--secondary);
    animation-duration: 6s;
    animation-direction: reverse;
}

.ring-3 {
    width: 160px;
    height: 160px;
    border-color: var(--accent);
    animation-duration: 4s;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.brain-particles {
    position: absolute;
    font-size: 1.5rem;
    width: 100%;
    height: 100%;
    animation: float-particles 6s ease-in-out infinite;
}

.brain-particles span {
    position: absolute;
    opacity: 0.6;
    animation: twinkle 2s ease-in-out infinite;
}

.brain-particles span:nth-child(1) { top: 5%; left: 20%; animation-delay: 0s; }
.brain-particles span:nth-child(2) { top: 15%; right: 15%; animation-delay: 0.5s; }
.brain-particles span:nth-child(3) { bottom: 20%; left: 10%; animation-delay: 1s; }
.brain-particles span:nth-child(4) { bottom: 5%; right: 25%; animation-delay: 1.5s; }

@keyframes twinkle {
    0%, 100% { opacity: 0.3; transform: scale(0.8); }
    50% { opacity: 1; transform: scale(1.2); }
}

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

/* ===== Stats Section ===== */
.stats {
    background: var(--bg-dark);
    padding: 60px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-card {
    position: relative;
    color: white;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-plus,
.stat-percent {
    font-size: 2rem;
    font-weight: 700;
    color: var(--secondary);
}

.stat-card p {
    margin-top: 8px;
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ===== Features Section ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.7;
}

.feature-link {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.feature-link i {
    transition: var(--transition);
}

.feature-link:hover i {
    transform: translateX(4px);
}

/* ===== PHP Demo Section ===== */
.badge-code {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(108, 60, 225, 0.1);
    border: 1px solid rgba(108, 60, 225, 0.2);
    border-radius: 6px;
    font-family: monospace;
    font-size: 0.85rem;
    color: var(--primary);
    margin-bottom: 16px;
}

.demo-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.demo-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.demo-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.demo-header {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-light);
}

.demo-icon {
    font-size: 1.8rem;
}

.demo-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
}

.demo-body {
    padding: 20px 24px;
}

.demo-body pre {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--text-body);
    overflow-x: auto;
}

.demo-output {
    color: var(--secondary);
    font-weight: 600;
}

.demo-note {
    text-align: center;
    margin-top: 40px;
    padding: 20px;
    background: linear-gradient(135deg, rgba(108, 60, 225, 0.05), rgba(0, 212, 170, 0.05));
    border-radius: var(--radius);
    border: 1px solid rgba(108, 60, 225, 0.1);
}

.demo-note strong {
    color: var(--primary);
}

/* ===== Newsletter ===== */
.newsletter-box {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius);
    padding: 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.newsletter-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 0% 100%, rgba(0, 212, 170, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 100% 0%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.newsletter-content {
    position: relative;
    z-index: 1;
}

.newsletter-content h2 {
    color: white;
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.newsletter-content p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
}

.newsletter-form {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    gap: 12px;
}

.newsletter-form input {
    flex: 1;
    padding: 16px 24px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
    font-family: inherit;
}

.newsletter-form input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.newsletter-form input:focus {
    border-color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.15);
}

.newsletter-form .btn {
    white-space: nowrap;
    background: white;
    color: var(--primary);
}

.newsletter-form .btn:hover {
    background: var(--bg-light);
}

/* ===== Page Hero ===== */
.page-hero {
    background: linear-gradient(135deg, #0A0A1A 0%, #1A0A2E 100%);
    padding: 140px 0 80px;
    text-align: center;
}

.page-hero h1 {
    font-size: 3rem;
    font-weight: 800;
    color: white;
    margin-bottom: 12px;
}

.page-hero p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== About Page ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 24px;
}

.about-text p {
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-highlights {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.highlight {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 16px 20px;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
}

.highlight-icon {
    font-size: 1.8rem;
    line-height: 1;
}

.highlight strong {
    display: block;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.highlight p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

.about-image-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, rgba(108, 60, 225, 0.1), rgba(0, 212, 170, 0.1));
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-size: 8rem;
    position: relative;
    border: 1px solid rgba(108, 60, 225, 0.1);
    overflow: hidden;
}

.ai-dots {
    position: absolute;
    width: 100%;
    height: 100%;
}

.ai-dots span {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: dotMove 4s linear infinite;
}

.ai-dots span:nth-child(1) { top: 20%; left: 20%; animation-delay: 0s; }
.ai-dots span:nth-child(2) { top: 30%; right: 30%; animation-delay: 1s; }
.ai-dots span:nth-child(3) { bottom: 40%; left: 40%; animation-delay: 2s; }
.ai-dots span:nth-child(4) { bottom: 20%; right: 20%; animation-delay: 3s; }

@keyframes dotMove {
    0%, 100% { transform: translate(0, 0); opacity: 0.3; }
    25% { transform: translate(10px, -10px); opacity: 1; }
    50% { transform: translate(20px, 0); opacity: 0.3; }
    75% { transform: translate(10px, 10px); opacity: 1; }
}

/* ===== Timeline ===== */
.timeline-grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    display: flex;
    gap: 32px;
    padding: 28px 32px;
    background: var(--bg-white);
    border-radius: var(--radius);
    border-left: 4px solid var(--primary);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.timeline-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
}

.timeline-year {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary);
    white-space: nowrap;
    min-width: 100px;
}

.timeline-content h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.timeline-content p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===== Types ===== */
.types-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.type-card {
    padding: 40px 28px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
}

.type-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.type-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.type-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.type-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== CTA Section ===== */
.cta-box {
    background: linear-gradient(135deg, var(--bg-dark), #1A0A2E);
    border-radius: var(--radius);
    padding: 80px 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 70%, rgba(108, 60, 225, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(0, 212, 170, 0.15) 0%, transparent 50%);
}

.cta-box h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.cta-box p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 32px;
    position: relative;
    z-index: 1;
}

.cta-box .btn {
    position: relative;
    z-index: 1;
}

/* ===== Services Page ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.service-desc {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-details {
    margin-bottom: 24px;
    flex: 1;
}

.service-details li {
    padding: 8px 0;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--text-body);
    font-size: 0.92rem;
}

.service-details li i {
    color: var(--secondary);
    margin-top: 3px;
    flex-shrink: 0;
}

/* ===== Process Steps ===== */
.process-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.step {
    display: flex;
    gap: 24px;
    align-items: flex-start;
    padding: 24px 0;
}

.step-number {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    color: white;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.step-content p {
    color: var(--text-light);
}

.step-connector {
    width: 2px;
    height: 30px;
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    margin-left: 23px;
}

/* ===== Contact Page ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact-form-wrapper {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
}

.contact-form-wrapper h2 {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 32px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.9rem;
}

.required {
    color: #EF4444;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
    color: var(--text-dark);
    background: var(--bg-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.form-group .input-error {
    border-color: #EF4444;
}

.error-msg {
    color: #EF4444;
    font-size: 0.85rem;
    font-weight: 500;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ===== Contact Info ===== */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
}

.contact-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 12px 0;
}

.contact-item i {
    font-size: 1.3rem;
    color: var(--primary);
    margin-top: 4px;
    width: 24px;
}

.contact-item strong {
    display: block;
    color: var(--text-dark);
    font-size: 0.9rem;
    margin-bottom: 2px;
}

.contact-item a,
.contact-item p {
    color: var(--text-light);
}

.contact-item a:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    background: var(--bg-light);
    transition: var(--transition);
    font-weight: 500;
}

.social-link:hover {
    background: var(--primary);
    color: white;
    transform: translateX(4px);
}

.contact-response-times {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}

.response-time {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-light);
    font-size: 0.95rem;
}

.response-time i {
    color: var(--secondary);
}

/* ===== Alerts ===== */
.alert {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 24px;
    border-radius: var(--radius-sm);
    margin: 24px auto;
    position: relative;
}

.alert-success {
    background: #ECFDF5;
    border: 1px solid #A7F3D0;
    color: #065F46;
}

.alert-error {
    background: #FEF2F2;
    border: 1px solid #FECACA;
    color: #991B1B;
}

.alert i {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.alert-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    margin-left: auto;
    color: inherit;
    opacity: 0.5;
    transition: var(--transition);
}

.alert-close:hover {
    opacity: 1;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 80px 0 0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: white;
    margin-bottom: 16px;
}

.footer-about p {
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
}

.footer-links h4 {
    color: white;
    font-weight: 700;
    margin-bottom: 20px;
    font-size: 1rem;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--primary-light);
    padding-left: 4px;
}

.footer-contact ul li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-contact ul li i {
    margin-top: 4px;
    color: var(--primary-light);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.9rem;
}

.footer-bottom strong {
    color: var(--primary-light);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .demo-cards { grid-template-columns: repeat(2, 1fr); }
    .types-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .contact-grid { grid-template-columns: 1fr; }
    .hero-content { grid-template-columns: 1fr; text-align: center; }
    .hero-text p { margin: 0 auto 36px; }
    .hero-actions { justify-content: center; }
    .hero-text h1 { font-size: 2.8rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition);
        pointer-events: none;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-link { font-size: 1.1rem; padding: 12px 0; }

    .nav-toggle { display: flex; }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .nav-toggle.active span:nth-child(2) { opacity: 0; }
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero { padding: 100px 0 60px; }
    .hero-text h1 { font-size: 2.2rem; }
    .hero-text p { font-size: 1rem; }
    .hero-actions { flex-direction: column; align-items: center; }
    .ai-brain { width: 240px; height: 240px; }
    .brain-core { font-size: 4rem; }
    .ring-1 { width: 200px; height: 200px; }
    .ring-2 { width: 160px; height: 160px; }
    .ring-3 { width: 120px; height: 120px; }

    .section-padding { padding: 60px 0; }
    .section-header { margin-bottom: 40px; }
    .section-header h2 { font-size: 1.8rem; }

    .features-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr; }
    .demo-cards { grid-template-columns: 1fr; }
    .types-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }

    .page-hero { padding: 100px 0 60px; }
    .page-hero h1 { font-size: 2rem; }

    .newsletter-box { padding: 40px 24px; }
    .newsletter-form { flex-direction: column; }
    .newsletter-content h2 { font-size: 1.5rem; }

    .cta-box { padding: 40px 24px; }
    .cta-box h2 { font-size: 1.8rem; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; gap: 8px; }

    .timeline-item { flex-direction: column; gap: 8px; }
    .timeline-year { min-width: auto; }

    .contact-form-wrapper { padding: 24px; }
    .form-row { grid-template-columns: 1fr; }

    .contact-card { padding: 24px; }
}

@media (max-width: 480px) {
    .hero-text h1 { font-size: 1.8rem; }
    .stat-number { font-size: 2.5rem; }
}