/* ============ Baileys PRO - Landing Page CSS ============ */
:root {
    --primary-color: #25d366;
    --secondary-color: #128c7e;
    --dark-color: #075e54;
    --light-color: #dcf8c6;
    --accent-color: #34b7f1;
    --text-color: #333;
    --light-text: #f5f5f5;
    --gray-bg: #f5f5f5;
    --dark-bg: #1a1a1a;
    --card-shadow: 0 8px 20px rgba(0,0,0,0.1);
    --hover-shadow: 0 12px 28px rgba(0,0,0,0.2);
    --transition-normal: all 0.3s ease;
    --transition-smooth: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
    overflow-x: hidden;
}

/* ============ HEADER ============ */
header {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: var(--transition-smooth);
}

header.scrolled {
    padding: 0.5rem 0;
    background: rgba(7, 94, 84, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 1100;
}

.logo i {
    font-size: 2rem;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
    transition: transform 0.3s ease;
}

.logo:hover i {
    transform: rotate(5deg);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, #fff, #dcf8c6);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Menu Mobile */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1100;
}

.menu-toggle span {
    display: block;
    height: 3px;
    width: 100%;
    border-radius: 3px;
    background: white;
    transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

.menu-toggle.active span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

nav ul {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    align-items: center;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-normal);
    padding: 0.5rem 1rem;
    border-radius: 4px;
    position: relative;
    overflow: hidden;
    display: block;
    white-space: nowrap;
}

nav a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: white;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

nav a:hover::before { transform: translateX(0); }
nav a:hover { background-color: rgba(255, 255, 255, 0.1); transform: translateY(-2px); }

nav a.btn {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

nav a.btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* ============ HERO ============ */
.hero {
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--secondary-color) 50%, var(--primary-color) 100%);
    color: white;
    padding: 10rem 2rem 6rem;
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 700px;
}

.hero-content h2 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.hero-content p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    max-width: 600px;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.8rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-normal);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
}

.btn.outline {
    background: transparent;
    border: 2px solid rgba(255,255,255,0.5);
    box-shadow: none;
}

.btn.outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: white;
}

.scroll-down {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: rgba(255,255,255,0.7);
    animation: bounce 2s infinite;
    cursor: pointer;
}

.scroll-down span {
    display: block;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ============ SECTIONS ============ */
.section {
    padding: 5rem 2rem;
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.section-title p {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* ============ FEATURES ============ */
.features {
    background-color: var(--gray-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover::before { transform: scaleX(1); }

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

.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin: 0 auto 1.5rem;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
    transition: var(--transition-normal);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--dark-color);
}

.feature-card p {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ============ API SECTION ============ */
.api-section {
    background: white;
}

.api-endpoints {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.endpoint-card {
    background: var(--gray-bg);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
    transition: var(--transition-normal);
}

.endpoint-card:hover {
    transform: translateX(5px);
    box-shadow: var(--card-shadow);
}

.endpoint-card h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.endpoint-card h3 i {
    color: var(--primary-color);
}

.endpoint-card p {
    color: #666;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.endpoint-card ul {
    list-style: none;
    padding: 0;
}

.endpoint-card li {
    padding: 0.3rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #555;
    font-size: 0.9rem;
}

.endpoint-card li::before {
    content: '→';
    color: var(--primary-color);
    font-weight: bold;
}

/* ============ QUICK START ============ */
.quickstart {
    background: var(--gray-bg);
}

.code-example {
    max-width: 800px;
    margin: 0 auto;
    background: #1a1a2e;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.code-header {
    background: #16213e;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.code-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.code-dot.red { background: #ff5f56; }
.code-dot.yellow { background: #ffbd2e; }
.code-dot.green { background: #27c93f; }

.code-body {
    padding: 1.5rem;
    overflow-x: auto;
}

.code-body pre {
    color: #a9b7c6;
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    line-height: 1.8;
    margin: 0;
}

.code-body .comment { color: #6a737d; }
.code-body .keyword { color: #c678dd; }
.code-body .string { color: #98c379; }
.code-body .method { color: #61afef; }
.code-body .url { color: #e5c07b; }

/* ============ FOOTER ============ */
footer {
    background: var(--dark-bg);
    color: var(--light-text);
    padding: 3rem 2rem;
    text-align: center;
}

footer p {
    opacity: 0.7;
    font-size: 0.9rem;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    nav ul {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--dark-color);
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        gap: 0.5rem;
        transition: right 0.3s ease;
        z-index: 1050;
    }

    nav ul.active {
        right: 0;
    }

    nav a {
        display: block;
        padding: 0.75rem 1rem;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .section-title h2 {
        font-size: 1.8rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .api-endpoints {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 8rem 1rem 4rem;
    }

    .hero-content h2 {
        font-size: 1.8rem;
    }

    .btn-group {
        flex-direction: column;
    }

    .btn {
        text-align: center;
        justify-content: center;
    }
}

/* ============ ANIMATIONS ============ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.zoom-in {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.zoom-in.visible {
    opacity: 1;
    transform: scale(1);
}