/* ===================================
   Modern Trekking Club Redesign
   =================================== */

/* CSS Variables */
:root {
    --primary-color: #2d5f3f;
    --primary-dark: #1a3d28;
    --primary-light: #4a8c5f;
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --text-dark: #1a1a1a;
    --text-medium: #4a4a4a;
    --text-light: #6b6b6b;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

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

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
    gap: 32px;
}

.logo-img {
    height: 48px;
    width: auto;
}

.logo-text {
    display: flex;
    gap: 6px;
    font-size: 20px;
    font-weight: 600;
    text-transform: lowercase;
}

.logo-shangrila {
    color: white;
}

.logo-venture {
    color: var(--accent-color);
}

.nav-list {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-list a {
    font-size: 15px;
    font-weight: 500;
    color: white;
    position: relative;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: white;
    transition: width 0.3s ease;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.whatsapp-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #25D366;
    transition: var(--transition);
}

.whatsapp-btn:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.phone-btn {
    font-size: 15px;
    font-weight: 600;
    color: white;
    white-space: nowrap;
}

.phone-btn:hover {
    color: rgba(255, 255, 255, 0.8);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 32px;
    height: 32px;
    justify-content: center;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: white;
    transition: var(--transition);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
    cursor: pointer;
    white-space: nowrap;
}

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

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

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

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

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

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

.btn-large {
    padding: 16px 40px;
    font-size: 17px;
}

.btn-small {
    padding: 8px 20px;
    font-size: 14px;
}

.cta-btn {
    background: var(--accent-color);
    color: white;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
}

.cta-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 0;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.1) 100%),
                url('images/hero-bg.jpg') top center/cover no-repeat;
    z-index: -1;
}

.hero-content {
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 40px 0;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(48px, 8vw, 72px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: clamp(18px, 3vw, 24px);
    line-height: 1.5;
    margin-bottom: 40px;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: white;
    font-size: 14px;
    animation: bounce 2s infinite;
}

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

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

/* Section Styles */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 64px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(36px, 5vw, 48px);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-medium);
    line-height: 1.6;
}

/* Tours Grid */
.tours-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.tour-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.tour-image {
    position: relative;
    height: 280px;
    overflow: hidden;
}

.tour-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.tour-card:hover .tour-image img {
    transform: scale(1.1);
}

.tour-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--accent-color);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.tour-content {
    padding: 24px;
}

.tour-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.tour-description {
    font-size: 15px;
    color: var(--text-medium);
    line-height: 1.6;
    margin-bottom: 16px;
}

.tour-link {
    display: inline-flex;
    align-items: center;
    font-size: 15px;
    font-weight: 600;
    color: var(--primary-color);
}

.tour-link:hover {
    color: var(--primary-dark);
    gap: 8px;
}

/* Destinations Grid */
.destinations {
    background: var(--bg-light);
}

.destinations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.destination-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.destination-image {
    height: 240px;
    overflow: hidden;
}

.destination-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.destination-card:hover .destination-image img {
    transform: scale(1.1);
}

.destination-content {
    padding: 24px;
}

.destination-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.destination-description {
    font-size: 15px;
    color: var(--text-medium);
    line-height: 1.6;
    margin-bottom: 16px;
}

.destination-link {
    display: inline-flex;
    align-items: center;
    font-size: 15px;
    font-weight: 600;
    color: var(--primary-color);
}

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

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.blog-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.blog-image {
    height: 240px;
    overflow: hidden;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.blog-card:hover .blog-image img {
    transform: scale(1.1);
}

.blog-content {
    padding: 24px;
}

.blog-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.blog-excerpt {
    font-size: 15px;
    color: var(--text-medium);
    line-height: 1.6;
    margin-bottom: 16px;
}

.blog-link {
    display: inline-flex;
    align-items: center;
    font-size: 15px;
    font-weight: 600;
    color: var(--primary-color);
}

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

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 100px 0;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(36px, 5vw, 48px);
    font-weight: 700;
    color: white;
    margin-bottom: 16px;
}

.cta-subtitle {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 80px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo img {
    height: 48px;
    margin-bottom: 16px;
}

.footer-tagline {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-4px);
}

.footer-heading {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 15px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
    padding-left: 8px;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-contact a,
.footer-contact li {
    color: rgba(255, 255, 255, 0.8);
    font-size: 15px;
}

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

.footer-address {
    margin-top: 8px;
    line-height: 1.6;
}

.footer-link {
    color: rgba(255, 255, 255, 0.8);
    font-size: 15px;
}

.footer-link:hover {
    color: white;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 32px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom-links {
    display: flex;
    gap: 24px;
}

.footer-bottom-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom-links a:hover {
    color: white;
}

.footer-dev {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-dev a {
    color: var(--accent-color);
    font-weight: 600;
}

.footer-dev a:hover {
    color: #60a5fa;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .nav {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: white;
        box-shadow: var(--shadow-lg);
        padding: 24px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-list {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }

    .nav-list a {
        font-size: 18px;
        padding: 8px 0;
        width: 100%;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .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(7px, -7px);
    }

    .header-actions .phone-btn {
        display: none;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .tours-grid,
    .destinations-grid,
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .hero {
        margin-top: 72px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .back-to-top {
        bottom: 24px;
        right: 24px;
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 12px 0;
    }

    .logo-img {
        height: 40px;
    }

    .header-actions .cta-btn {
        display: none;
    }

    .tour-image,
    .destination-image,
    .blog-image {
        height: 200px;
    }
}

/* Loading Animation */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.loading {
    animation: shimmer 2s infinite;
    background: linear-gradient(to right, #f0f0f0 4%, #e0e0e0 25%, #f0f0f0 36%);
    background-size: 1000px 100%;
}