/* ================================
   AIPA - Modern Responsive Website
   World-Class Design with Animations
   ================================ */

/* CSS Variables */
:root {
    --primary: #6366f1;
    --secondary: #8b5cf6;
    --accent: #06b6d4;
    --dark: #0f172a;
    --dark-soft: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --success: #10b981;
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-2: linear-gradient(135deg, #06b6d4 0%, #6366f1 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--light);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ================================
   Navigation
   ================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--dark);
}

.logo-icon {
    font-size: 2rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--gray);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.nav-link.admin-link {
    color: var(--accent);
}

.nav-actions {
    display: flex;
    gap: 1rem;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    transition: all 0.3s ease;
}

/* ================================
   Buttons
   ================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-outline {
    background: transparent;
    color: var(--dark);
    border: 2px solid var(--gray);
}

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

.btn-outline-light {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-outline-light:hover {
    background: white;
    color: var(--primary);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

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

/* ================================
   Hero Section
   ================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -200px;
    right: -100px;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--secondary);
    bottom: -250px;
    left: -150px;
    animation-delay: -5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: var(--accent);
    top: 50%;
    left: 50%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -50px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 2rem;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.hero-features {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray);
}

.hero-feature svg {
    color: var(--success);
}

/* AI Brain Visual */
.hero-visual {
    position: relative;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-brain {
    position: relative;
    width: 300px;
    height: 300px;
}

.brain-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--gradient-1);
    border-radius: 50%;
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.5);
    animation: pulse 2s ease-in-out infinite;
}

.brain-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 2px solid var(--primary);
    border-radius: 50%;
    opacity: 0.3;
}

.ring-1 {
    width: 120px;
    height: 120px;
    animation: rotate 10s linear infinite;
}

.ring-2 {
    width: 180px;
    height: 180px;
    animation: rotate 15s linear infinite reverse;
}

.ring-3 {
    width: 240px;
    height: 240px;
    animation: rotate 20s linear infinite;
}

.brain-nodes {
    position: absolute;
    inset: 0;
}

.node {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
    animation: pulse 2s ease-in-out infinite;
}

.node-1 { top: 20%; left: 50%; animation-delay: 0s; }
.node-2 { top: 50%; right: 20%; animation-delay: 0.3s; }
.node-3 { bottom: 20%; left: 50%; animation-delay: 0.6s; }
.node-4 { top: 50%; left: 20%; animation-delay: 0.9s; }
.node-5 { top: 30%; right: 30%; animation-delay: 1.2s; }
.node-6 { bottom: 30%; right: 30%; animation-delay: 1.5s; }

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

@keyframes rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

/* Animation Classes */
.animate-fade-in {
    animation: fadeIn 1s ease-out;
}

.animate-fade-in-delay {
    animation: fadeIn 1s ease-out 0.3s backwards;
}

.animate-fade-in-delay-2 {
    animation: fadeIn 1s ease-out 0.6s backwards;
}

.animate-fade-in-delay-3 {
    animation: fadeIn 1s ease-out 0.9s backwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ================================
   Stats Section
   ================================ */
.stats {
    padding: 4rem 0;
    background: white;
}

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

.stat-card {
    text-align: center;
    padding: 2rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--gray);
    font-size: 1rem;
}

/* ================================
   Sections
   ================================ */
section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ================================
   Features Section
   ================================ */
.features {
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    background: var(--light);
    border-radius: var(--radius-xl);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--gray);
}

/* ================================
   How It Works
   ================================ */
.how-it-works {
    background: var(--dark);
    color: white;
}

.how-it-works .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    flex: 1;
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.step h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.step p {
    color: rgba(255, 255, 255, 0.7);
}

.step-connector {
    width: 60px;
    height: 2px;
    background: rgba(255, 255, 255, 0.2);
    margin-top: -4rem;
}

/* ================================
   Capabilities
   ================================ */
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.capability-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid #e5e7eb;
    transition: all 0.3s ease;
}

.capability-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.capability-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.capability-icon {
    font-size: 1.5rem;
}

.capability-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

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

.capability-list li {
    padding: 0.5rem 0;
    color: var(--gray);
    font-size: 0.875rem;
    border-bottom: 1px solid #f3f4f6;
}

.capability-list li:last-child {
    border-bottom: none;
}

.capability-list li:before {
    content: "✓ ";
    color: var(--success);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* ================================
   Integrations
   ================================ */
.integrations {
    background: var(--light);
}

.integration-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1.5rem;
}

.integration-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e5e7eb;
}

.integration-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.integration-logo {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.integration-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.integration-card p {
    font-size: 0.875rem;
    color: var(--gray);
}

/* ================================
   Login Section
   ================================ */
.login-section {
    background: white;
}

.login-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.login-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.login-info p {
    color: var(--gray);
    margin-bottom: 2rem;
}

.login-benefits {
    list-style: none;
}

.login-benefits li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
}

.login-benefits svg {
    color: var(--success);
}

.login-forms {
    background: var(--light);
    padding: 2rem;
    border-radius: var(--radius-xl);
}

.login-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.tab-btn {
    flex: 1;
    padding: 0.75rem;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background: white;
    color: var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #e5e7eb;
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-note {
    background: #fef3c7;
    border: 1px solid #fcd34d;
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: 1rem;
}

.form-note p {
    color: #92400e;
    font-size: 0.875rem;
    margin: 0;
}

.form-footer {
    text-align: center;
    margin-top: 1rem;
}

.form-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

/* ================================
   CTA Section
   ================================ */
.cta {
    background: var(--gradient-1);
    color: white;
    text-align: center;
    padding: 6rem 0;
}

.cta-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* ================================
   Footer
   ================================ */
.footer {
    background: var(--dark);
    color: white;
    padding: 4rem 0 2rem;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .capabilities-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .integration-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .nav-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .hero-visual {
        height: 400px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps-container {
        flex-direction: column;
    }
    
    .step-connector {
        width: 2px;
        height: 60px;
        margin: 0;
    }
    
    .capabilities-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .integration-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .login-container {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .capabilities-grid {
        grid-template-columns: 1fr;
    }
    
    .integration-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* ================================
   Scroll Animations
   ================================ */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}