/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Colors */
    --primary-color: #2c7391;
    --primary-dark: #1f5468;
    --primary-light: #3a8fb0;
    --secondary-color: #e67e22;
    --accent-color: #f39c12;

    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --text-white: #ffffff;

    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-gray: #ecf0f1;
    --bg-dark: #34495e;

    --success: #27ae60;
    --danger: #e74c3c;
    --warning: #f39c12;
    --info: #3498db;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #2c7391 0%, #3a8fb0 100%);
    --gradient-secondary: linear-gradient(135deg, #e67e22 0%, #f39c12 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(44, 115, 145, 0.9) 0%, rgba(58, 143, 176, 0.9) 100%);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1.25rem;
    --spacing-lg: 1.75rem;
    --spacing-xl: 2.5rem;
    --spacing-2xl: 3.5rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Container */
    --container-width: 1100px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Battambang', 'Inter', sans-serif;
    font-size: 15px;
    line-height: 1.5;
    color: var(--text-dark);
    background-color: var(--bg-light);
    overflow-x: hidden;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ===================================
   Header Styles
   =================================== */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    background: var(--gradient-primary);
    color: var(--text-white);
    padding: var(--spacing-xs) 0;
    font-size: 0.875rem;
}

.header-top-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-contact {
    display: flex;
    gap: var(--spacing-md);
}

.header-contact a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-white);
    opacity: 0.9;
}

.header-contact a:hover {
    opacity: 1;
}

.header-social {
    display: flex;
    gap: var(--spacing-sm);
}

.header-social a {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--text-white);
    transition: var(--transition-fast);
}

.header-social a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.header-main {
    padding: var(--spacing-sm) 0;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

.nav-menu {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: var(--spacing-xs) var(--spacing-md);
    color: var(--text-dark);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* Header Social Icons - Main Navbar */
.header-social-main {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding-right: var(--spacing-sm);
    border-right: 2px solid var(--bg-gray);
}

.social-icon {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-white);
    font-size: 1.125rem;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.social-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.social-icon:hover::before {
    width: 100%;
    height: 100%;
}

.social-icon i {
    position: relative;
    z-index: 1;
}

/* Brand-specific colors */
.social-icon.facebook {
    background: linear-gradient(135deg, #1877f2 0%, #0d65d9 100%);
}

.social-icon.facebook:hover {
    background: linear-gradient(135deg, #0d65d9 0%, #1877f2 100%);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 20px rgba(24, 119, 242, 0.4);
}

.social-icon.telegram {
    background: linear-gradient(135deg, #0088cc 0%, #006699 100%);
}

.social-icon.telegram:hover {
    background: linear-gradient(135deg, #006699 0%, #0088cc 100%);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 136, 204, 0.4);
}

.social-icon.youtube {
    background: linear-gradient(135deg, #ff0000 0%, #cc0000 100%);
}

.social-icon.youtube:hover {
    background: linear-gradient(135deg, #cc0000 0%, #ff0000 100%);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 20px rgba(255, 0, 0, 0.4);
}

.social-icon.tiktok {
    background: linear-gradient(135deg, #000000 0%, #333333 100%);
}

.social-icon.tiktok:hover {
    background: linear-gradient(135deg, #fe2c55 0%, #000000 100%);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 20px rgba(254, 44, 85, 0.4);
}

.header-top-right {
    display: flex;
    align-items: center;
}

.header-welcome {
    font-size: 0.875rem;
    opacity: 0.9;
    font-style: italic;
}

.search-toggle,
.mobile-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-dark);
    transition: var(--transition-fast);
}

.search-toggle:hover,
.mobile-toggle:hover {
    background: var(--bg-gray);
}

.mobile-toggle {
    display: none;
}

/* Search Bar */
.search-bar {
    background: var(--bg-light);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--bg-gray);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.search-bar.active {
    max-height: 200px;
}

.search-form {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 600px;
    margin: 0 auto;
}

.search-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--bg-gray);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--gradient-primary);
    color: var(--text-white);
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: var(--transition-fast);
}

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

/* ===================================
   Button Styles
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition-fast);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-white);
}

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

.btn-secondary {
    background: var(--gradient-secondary);
    color: var(--text-white);
}

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

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

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

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

/* ===================================
   Flash Messages
   =================================== */
.flash-message {
    padding: var(--spacing-md) 0;
    animation: slideDown var(--transition-normal);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.flash-success {
    background: var(--success);
    color: var(--text-white);
}

.flash-error {
    background: var(--danger);
    color: var(--text-white);
}

.flash-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.flash-content i {
    font-size: 1.5rem;
}

.flash-close {
    margin-left: auto;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--text-white);
    transition: var(--transition-fast);
}

.flash-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ===================================
   Main Content
   =================================== */
.main-content {
    min-height: calc(100vh - 400px);
    padding: var(--spacing-xl) 0;
}

/* ===================================
   Footer Styles
   =================================== */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    margin-top: var(--spacing-2xl);
}

.footer-main {
    padding: var(--spacing-2xl) 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.footer-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-white);
}

.footer-text {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--text-white);
    transition: var(--transition-fast);
}

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

.footer-heading {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-white);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-links a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--text-white);
    padding-left: var(--spacing-xs);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.8);
}

.footer-contact i {
    font-size: 1.25rem;
    color: var(--primary-light);
    margin-top: 2px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md) 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

/* ===================================
   Scroll to Top Button
/* ===================================
   Scroll to Top Button
   =================================== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--text-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
}

.scroll-top.active {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 968px) {
    .header-top {
        display: none;
    }

    .header-social-main {
        border-right: none;
        padding-right: 0;
        gap: 0.5rem;
    }

    .social-icon {
        width: 34px;
        height: 34px;
        font-size: 1rem;
    }

    .mobile-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-white);
        padding: var(--spacing-lg);
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-xl);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .nav-link {
        padding: var(--spacing-md);
        font-size: 1.125rem;
    }

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

    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 576px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }

    .logo {
        font-size: 1.25rem;
    }

    .logo i {
        font-size: 1.5rem;
    }

    .scroll-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}