/* Ikower - Main Stylesheet */

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --text-dark: #0f172a;
    --text-medium: #475569;
    --text-light: #64748b;
    --bg-gray: #f8fafc;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(37, 99, 235, 0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
    background: #ffffff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
header {
    background: #ffffff;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

header.scrolled {
    box-shadow: var(--shadow-sm);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.5px;
    z-index: 1001;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 28px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

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

.nav-menu a {
    color: var(--text-medium);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.95rem;
}

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

.btn-header {
    background: var(--primary-color);
    color: white !important;
    padding: 0.6rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-header:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

/* Hero Section */
.hero {
    padding: 140px 2rem 80px;
    background: linear-gradient(to bottom, var(--bg-gray) 0%, #ffffff 100%);
    margin-top: 65px;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.hero .highlight {
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    line-height: 1.7;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.btn-primary {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
    transition: var(--transition);
    font-size: 1.05rem;
    border: 2px solid var(--primary-color);
    line-height: 1.5;
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-outline,
a.btn-outline,
.hero-buttons .btn-outline {
    display: inline-block !important;
    background: white !important;
    color: var(--primary-color) !important;
    border: 2px solid var(--primary-color) !important;
    text-decoration: none !important;
    border-radius: 6px !important;
    font-weight: 600 !important;
    transition: var(--transition) !important;
    font-size: 1.05rem !important;
    padding: 1rem 2rem !important;
    line-height: 1.5 !important;
}

.btn-outline:hover,
a.btn-outline:hover,
.hero-buttons .btn-outline:hover {
    background: var(--primary-color) !important;
    color: white !important;
    border-color: var(--primary-color) !important;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2) !important;
    transform: translateY(-2px) !important;
    text-decoration: none !important;
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    justify-content: center;
    margin-top: 4rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    display: block;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

/* Sections */
section {
    padding: 100px 0;
}

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

.section-label {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-description {
    font-size: 1.15rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

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

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

.feature-card {
    padding: 2rem;
    border-radius: 8px;
    background: var(--bg-gray);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    background: white;
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.8rem;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.feature-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-block;
    transition: var(--transition);
}

.feature-link:hover {
    color: var(--primary-dark);
    transform: translateX(4px);
}

/* How It Works */
.how-it-works {
    background: var(--bg-gray);
}

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

.step-item {
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.step-item h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.8rem;
}

.step-item p {
    color: var(--text-light);
    line-height: 1.6;
}

.cta-inline {
    text-align: center;
    margin-top: 3rem;
}

/* CTA Section */
.cta-section {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 80px 2rem;
}

.cta-section h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-section p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-section .btn-primary {
    background: white;
    color: var(--primary-color);
    border-color: white;
}

.cta-section .btn-primary:hover {
    background: var(--bg-gray);
    border-color: var(--bg-gray);
}

/* Footer */
footer {
    background: var(--text-dark);
    color: var(--text-light);
    padding: 4rem 2rem 2rem;
}

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

.footer-column h3,
.footer-column h4 {
    color: white;
    margin-bottom: 1.5rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
}

.footer-column p {
    line-height: 1.7;
    margin-bottom: 1rem;
}

.footer-founded {
    font-weight: 600;
    color: white;
}

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

.footer-column ul li {
    margin-bottom: 0.8rem;
}

.footer-column a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
}

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid #1e293b;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.footer-bottom p {
    color: var(--text-light);
}

/* Use Cases */
.use-cases {
    padding: 80px 0;
    background: #f8fafc;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.use-case-card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 32px;
    transition: all 0.3s ease;
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--primary-color);
}

.use-case-icon {
    font-size: 48px;
    margin-bottom: 16px;
    display: block;
}

.use-case-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #1e293b;
}

.use-case-card p {
    font-size: 15px;
    line-height: 1.6;
    color: #475569;
}

/* Product Preview */
.product-preview {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.product-preview .section-header h2,
.product-preview .section-header .section-label,
.product-preview .section-header .section-description {
    color: white;
}

.preview-container {
    margin-top: 48px;
}

.preview-placeholder {
    max-width: 900px;
    margin: 0 auto;
}

.preview-window {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.3);
}

.window-header {
    background: #f1f5f9;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid #e2e8f0;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #cbd5e1;
}

.dot:nth-child(1) {
    background: #ef4444;
}

.dot:nth-child(2) {
    background: #f59e0b;
}

.dot:nth-child(3) {
    background: #10b981;
}

.window-title {
    margin-left: auto;
    font-size: 14px;
    color: #64748b;
    font-weight: 500;
}

.window-content {
    padding: 48px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    min-height: 400px;
}

.preview-text {
    text-align: left;
}

.preview-text h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #1e293b;
}

.preview-text p {
    font-size: 16px;
    color: #475569;
    margin-bottom: 32px;
}

/* Why Us */
.why-us {
    padding: 80px 0;
    background: white;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.why-card {
    text-align: center;
    padding: 32px;
}

.why-icon {
    font-size: 56px;
    margin-bottom: 24px;
    display: block;
}

.why-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #1e293b;
}

.why-card p {
    font-size: 15px;
    line-height: 1.6;
    color: #475569;
}