/* Landing Page Styles - Payamchi API */
:root {
    --cyan-50: #ecfeff;
    --cyan-100: #cffafe;
    --cyan-200: #a5f3fc;
    --cyan-300: #67e8f9;
    --cyan-400: #22d3ee;
    --cyan-500: #06b6d4;
    --cyan-600: #0891b2;
    --cyan-700: #0e7490;
    --cyan-800: #155e75;
    --cyan-900: #164e63;
    
    --telegram-dark: #17212b;
    --telegram-darker: #0e1621;
    --telegram-light: #242f3d;
    
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    
    --bg-white: #ffffff;
    --bg-gray-50: #f9fafb;
    --bg-gray-100: #f3f4f6;
}

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

body {
    font-family: 'Vazirmatn', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--cyan-50) 0%, var(--cyan-100) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
.nav-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-logo {
    height: 40px;
    width: auto;
}

.nav-logo-fallback {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--cyan-500), var(--cyan-600));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.2rem;
}

.logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--cyan-600);
}

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

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

.nav-link:hover {
    color: var(--cyan-600);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    right: 0;
    width: 0;
    height: 2px;
    background: var(--cyan-600);
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 2rem 4rem;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: 0;
}

.floating-circle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--cyan-200), var(--cyan-300));
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.circle-1 {
    width: 400px;
    height: 400px;
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.circle-2 {
    width: 300px;
    height: 300px;
    bottom: -50px;
    left: -50px;
    animation-delay: 5s;
}

.circle-3 {
    width: 250px;
    height: 250px;
    top: 50%;
    left: 10%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-30px, 30px) scale(0.9);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-logo-container {
    margin-bottom: 2rem;
    animation: fadeInScale 1s ease-out;
}

.hero-logo {
    height: 120px;
    width: auto;
    filter: drop-shadow(0 10px 30px rgba(6, 182, 212, 0.3));
}

.hero-title {
    margin-bottom: 1.5rem;
}

.title-main {
    display: block;
    font-size: 4rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--cyan-600), var(--cyan-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.title-sub {
    display: block;
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-secondary);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

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

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--cyan-500), var(--cyan-600));
    color: white;
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.5);
}

.btn-secondary {
    background: white;
    color: var(--cyan-600);
    border-color: var(--cyan-600);
}

.btn-secondary:hover {
    background: var(--cyan-600);
    color: white;
    transform: translateY(-2px);
}

/* Animations */
@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

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

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

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

.animate-slide-up {
    animation: slideUp 0.6s ease-out;
}

.animate-slide-up-delay {
    animation: slideUp 0.6s ease-out 0.2s both;
}

.animate-slide-up-delay-2 {
    animation: slideUp 0.6s ease-out 0.4s both;
}

.animate-slide-up-delay-3 {
    animation: slideUp 0.6s ease-out 0.6s both;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Features Section */
.features-section {
    padding: 6rem 2rem;
    background: white;
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--cyan-600), var(--cyan-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: linear-gradient(135deg, var(--cyan-50), white);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(6, 182, 212, 0.2);
    border-color: var(--cyan-300);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    display: block;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* API Section */
.api-section {
    padding: 6rem 2rem;
    background: linear-gradient(135deg, var(--cyan-50), var(--cyan-100));
}

.api-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.api-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    border: 2px solid transparent;
}

.api-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(6, 182, 212, 0.2);
    border-color: var(--cyan-300);
    color: var(--cyan-600);
}

.api-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.api-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.api-card p {
    color: var(--text-secondary);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

/* Footer */
.footer {
    background: var(--telegram-dark);
    color: white;
    padding: 3rem 2rem 1.5rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-logo {
    height: 50px;
    width: auto;
}

.footer-text {
    color: rgba(255, 255, 255, 0.8);
}

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

.footer-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--cyan-400);
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }
    
    .title-main {
        font-size: 2.5rem;
    }
    
    .title-sub {
        font-size: 1.2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .btn {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .api-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}