/* ==========================================================================
   DHAKA HOLIDAY UK - MODERN LUXURY TRAVEL AGENCY DESIGN SYSTEM
   Theme: Crimson / Ruby Red & Obsidian Luxury Slate
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,600;0,700;0,800;1,600&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Primary Red Brand Palette */
    --primary: #DC2626;               /* Vibrant Crimson Red */
    --primary-hover: #B91C1C;         /* Deep Crimson */
    --primary-dark: #991B1B;          /* Dark Burgundy/Wine */
    --primary-light: #EF4444;         /* Scarlet Highlight */
    --primary-subtle: #FEE2E2;        /* Soft Rose White */
    --primary-glow: rgba(220, 38, 38, 0.28);
    --primary-gradient: linear-gradient(135deg, #E63946 0%, #DC2626 50%, #991B1B 100%);
    --primary-gradient-subtle: linear-gradient(135deg, rgba(220, 38, 38, 0.08) 0%, rgba(239, 68, 68, 0.03) 100%);
    --hero-gradient-overlay: linear-gradient(180deg, rgba(15, 23, 42, 0.75) 0%, rgba(15, 23, 42, 0.65) 50%, rgba(15, 23, 42, 0.92) 100%);

    /* Secondary & Accent Colors */
    --accent-gold: #F59E0B;
    --accent-gold-glow: rgba(245, 158, 11, 0.3);
    --accent-emerald: #10B981;
    --accent-blue: #0284C7;

    /* Neutrals & Surfaces */
    --bg-main: #FAFAFA;
    --bg-surface: #FFFFFF;
    --bg-surface-elevated: #FFFFFF;
    --bg-soft-red: #FFF5F5;
    --bg-dark: #0F172A;
    --bg-dark-card: #1E293B;
    
    /* Text Colors */
    --text-main: #0F172A;
    --text-muted: #64748B;
    --text-light: #94A3B8;
    --text-white: #FFFFFF;
    --text-white-muted: rgba(255, 255, 255, 0.8);

    /* Borders & Shadows */
    --border-subtle: #F1F5F9;
    --border-medium: #E2E8F0;
    --border-red: #FECACA;
    --border-red-focus: rgba(220, 38, 38, 0.5);

    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
    --shadow-red: 0 10px 25px rgba(220, 38, 38, 0.35);
    --shadow-card-hover: 0 20px 35px -5px rgba(220, 38, 38, 0.12), 0 10px 20px -5px rgba(0, 0, 0, 0.04);

    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 32px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ==========================================================================
   Base & Reset
   ========================================================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    color: var(--text-main);
    background-color: var(--bg-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
    list-style: none;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
}

button {
    cursor: pointer;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-fluid {
    width: 100%;
    padding: 0 2rem;
}

/* ==========================================================================
   Typography Utilities
   ========================================================================== */
h1, h2, h3, h4, .font-heading {
    font-family: var(--font-heading);
    color: var(--text-main);
    line-height: 1.25;
}

.section-tagline {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary);
    background-color: var(--primary-subtle);
    padding: 0.35rem 1rem;
    border-radius: var(--radius-full);
    margin-bottom: 0.75rem;
}

.section-tagline i {
    font-size: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.5px;
}

.section-title span.highlight {
    color: var(--primary);
    position: relative;
    display: inline-block;
}

.section-title span.highlight::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    width: 100%;
    height: 8px;
    background: rgba(220, 38, 38, 0.15);
    z-index: -1;
    border-radius: 4px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 620px;
    margin: 0 auto;
}

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

.section-header {
    margin-bottom: 3.5rem;
}

/* ==========================================================================
   Buttons & CTAs
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.85rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    cursor: pointer;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(220, 38, 38, 0.45);
    color: var(--text-white);
}

.btn-primary:active {
    transform: translateY(0);
}

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

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

.btn-white {
    background: var(--bg-surface);
    color: var(--primary);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    background: #FFF5F5;
    color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-outline-white {
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-white);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

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

.btn-sm {
    padding: 0.5rem 1.1rem;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 1.05rem 2.25rem;
    font-size: 1.05rem;
}

.btn-icon {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* ==========================================================================
   Header & Topbar
   ========================================================================== */
.topbar {
    background: var(--bg-dark);
    color: var(--text-white-muted);
    font-size: 0.85rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.topbar-contact {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.topbar-contact a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-white-muted);
}

.topbar-contact a:hover {
    color: var(--primary-light);
}

.topbar-contact i {
    color: var(--primary-light);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.currency-selector {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
    color: var(--text-white);
}

.currency-selector select {
    background: transparent;
    color: var(--text-white);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
}

.currency-selector select option {
    background: var(--bg-dark);
    color: var(--text-white);
}

/* Main Navbar */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: var(--transition-normal);
}

.site-header.scrolled {
    padding: 0.4rem 0;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 6px 25px rgba(220, 38, 38, 0.08);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 90px;
    transition: height var(--transition-normal);
}

.site-header.scrolled .navbar {
    height: 76px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-heading);
    font-size: 1.7rem;
    font-weight: 800;
    color: var(--text-main);
}

.brand-logo .logo-icon {
    width: 42px;
    height: 42px;
    background: var(--primary-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    box-shadow: var(--shadow-red);
    transform: rotate(-5deg);
    transition: var(--transition-bounce);
}

.brand-logo:hover .logo-icon {
    transform: rotate(0deg) scale(1.05);
}

.brand-logo .logo-text span {
    color: var(--primary);
}

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

.nav-link {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-main);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2.5px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition-fast);
    transform: translateX(-50%);
}

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

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

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

.nav-wishlist-btn {
    position: relative;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-soft-red);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    transition: var(--transition-fast);
}

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

.wishlist-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background: var(--primary-dark);
    color: var(--text-white);
    font-size: 0.7rem;
    font-weight: 800;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid #FFFFFF;
}

.brand-logo img {
    height: 72px;
    width: auto;
    object-fit: contain;
    transition: height 0.3s ease;
}

.site-header.scrolled .brand-logo img {
    height: 60px;
}

.nav-whatsapp-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(37, 211, 102, 0.12);
    color: #15803D;
    border: 1px solid rgba(37, 211, 102, 0.35);
    padding: 0.55rem 1.15rem;
    border-radius: var(--radius-full);
    font-size: 0.88rem;
    font-weight: 700;
    transition: all var(--transition-fast);
}

.mobile-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-sm);
    padding: 0.45rem;
    font-size: 1.5rem;
    color: var(--text-main);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.mobile-toggle:hover {
    color: var(--primary);
    border-color: var(--primary-light);
    background: var(--bg-soft-red);
}

.mobile-toggle svg {
    width: 26px;
    height: 26px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background: var(--bg-dark);
    color: #CBD5E1;
    padding: 5rem 0 2rem;
    position: relative;
    overflow: hidden;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3.5rem;
    margin-bottom: 4rem;
}

.footer-brand .brand-logo {
    color: #FFFFFF;
    margin-bottom: 1.25rem;
}

.footer-about {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    color: #94A3B8;
}

.footer-socials {
    display: flex;
    gap: 0.75rem;
}

.footer-social-btn {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.09);
    border: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    transition: all 0.25s ease;
    text-decoration: none;
}

.footer-social-btn svg {
    display: block;
    transition: transform 0.2s ease;
}

.footer-social-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(220, 38, 38, 0.35);
}

.footer-social-btn:hover svg {
    transform: scale(1.1);
}

.footer-widget h4 {
    color: #FFFFFF;
    font-family: var(--font-body);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.6rem;
}

.footer-widget h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 35px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: #94A3B8;
    font-size: 0.92rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-light);
    transform: translateX(4px);
}

.footer-newsletter p {
    font-size: 0.92rem;
    color: #94A3B8;
    margin-bottom: 1rem;
}

.newsletter-form {
    display: flex;
    position: relative;
    margin-bottom: 1rem;
}

.newsletter-form input {
    width: 100%;
    padding: 0.85rem 3.5rem 0.85rem 1.25rem;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-full);
    color: #FFFFFF;
    font-size: 0.9rem;
}

.newsletter-form input:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.1);
}

.newsletter-form button {
    position: absolute;
    right: 4px;
    top: 4px;
    bottom: 4px;
    width: 44px;
    background: var(--primary-gradient);
    color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: var(--transition-fast);
}

.newsletter-form button:hover {
    transform: scale(1.05);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.88rem;
    color: #94A3B8;
}

.footer-badges {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.footer-badge-item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.85rem;
}

.footer-badge-item i {
    color: var(--primary-light);
}

/* Floating WhatsApp Premium Widget */
.floating-whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    background: #25D366;
    color: #FFFFFF;
    width: 62px;
    height: 62px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(37, 211, 102, 0.5);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease;
    text-decoration: none;
}

.floating-whatsapp-btn:hover {
    transform: scale(1.1) rotate(6deg);
    box-shadow: 0 14px 40px rgba(37, 211, 102, 0.7);
    color: #FFFFFF;
}

.floating-whatsapp-pulse {
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 2px solid #25D366;
    animation: wa-pulse 2s infinite cubic-bezier(0.4, 0, 0.6, 1);
    pointer-events: none;
}

@keyframes wa-pulse {
    0% {
        transform: scale(0.95);
        opacity: 0.9;
    }
    50% {
        transform: scale(1.3);
        opacity: 0;
    }
    100% {
        transform: scale(0.95);
        opacity: 0;
    }
}

.floating-whatsapp-tooltip {
    position: absolute;
    right: 74px;
    background: #0F172A;
    color: #FFFFFF;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 0.45rem 0.9rem;
    border-radius: 8px;
    white-space: nowrap;
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 6px 20px rgba(0,0,0,0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateX(10px);
    transition: all 0.25s ease;
    pointer-events: none;
}

.floating-whatsapp-btn:hover .floating-whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.nav-whatsapp-btn:hover {
    background: #25D366 !important;
    color: #FFFFFF !important;
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
    transform: translateY(-2px);
}

.nav-whatsapp-btn:hover svg {
    fill: #FFFFFF !important;
}

.back-to-top {
    position: fixed;
    bottom: 98px;
    right: 34px;
    z-index: 998;
    background: var(--primary-gradient);
    color: #FFFFFF;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-red);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-normal);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

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