/* assets/css/style.css */

/* Custom Properties for Theming */
:root {
    --color-bg-light: #F7F7F5;
    --color-bg-card-light: #FFFFFF;
    --color-text-light: #183B56;
    --color-text-muted-light: #4A6375;
    --color-border-light: rgba(24, 59, 86, 0.1);
    
    --color-primary: #123F46; /* Deep Teal */
    --color-accent: #D0A85C; /* Champagne Gold */
    --color-accent-hover: #b8893d;

    /* Currently active theme variables */
    --bg-color: var(--color-bg-light);
    --bg-card: var(--color-bg-card-light);
    --text-primary: var(--color-text-light);
    --text-muted: var(--color-text-muted-light);
    --border-color: var(--color-border-light);
    
    --glass-bg: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(255, 255, 255, 0.4);
}

[data-theme="dark"] {
    --bg-color: #0b1923; /* Deep Navy */
    --bg-card: #132431;
    --text-primary: #F7F7F5;
    --text-muted: #a0b5c7;
    --border-color: rgba(255, 255, 255, 0.1);
    
    --glass-bg: rgba(19, 36, 49, 0.65);
    --glass-border: rgba(255, 255, 255, 0.1);
}

/* Base Styles */
body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6, .font-heading {
    font-family: 'Playfair Display', serif;
}

/* Glassmorphism utility */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .glass-panel {
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
}

/* Layout Utilities */
.max-w-container {
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
}

.section-padding {
    padding-top: 5rem;
    padding-bottom: 5rem;
}
@media (min-width: 768px) {
    .section-padding {
        padding-top: 8rem;
        padding-bottom: 8rem;
    }
}

/* Typography Utilities */
.text-primary-brand { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.bg-primary-brand { background-color: var(--color-primary); }
.bg-accent { background-color: var(--color-accent); }

/* Buttons */
.btn-premium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-weight: 500;
    transition: all 0.3s ease;
    border-radius: 0;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-solid {
    background-color: var(--color-primary);
    color: #fff;
    border: 1px solid var(--color-primary);
}
.btn-solid:hover {
    background-color: #0c2b30;
    color: #fff;
}

.btn-accent {
    background-color: var(--color-accent);
    color: #fff;
    border: 1px solid var(--color-accent);
}
.btn-accent:hover {
    background-color: var(--color-accent-hover);
    color: #fff;
}

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-outline:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary);
    color: #fff;
}
[data-theme="dark"] .btn-outline {
    color: #fff;
    border-color: var(--glass-border);
}

/* Navigation */
.main-header {
    transition: all 0.3s ease;
    background-color: transparent;
}
.main-header.scrolled {
    background: var(--glass-bg);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--glass-border);
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}
.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    padding-bottom: 4px;
}
.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: 0;
    left: 0;
    background-color: var(--color-accent);
    transition: width 0.3s ease;
}
.nav-link:hover::after, .nav-link.nav-link-active::after {
    width: 100%;
}
[data-theme="dark"] .nav-link {
    color: #fff;
}

/* Light mode specific: white text at the top (over dark hero), dark text when scrolled */
[data-theme="light"] .main-header:not(.scrolled) .nav-link,
[data-theme="light"] .main-header:not(.scrolled) #theme-toggle,
[data-theme="light"] .main-header:not(.scrolled) #mobile-menu-btn {
    color: #fff;
}

/* Logo Switching Logic */
.logo-white { display: block; }
.logo-dark { display: none; }

/* In light mode, when header is scrolled (white glass), show dark logo */
[data-theme="light"] .main-header.scrolled .logo-white { display: none; }
[data-theme="light"] .main-header.scrolled .logo-dark { display: block; }

/* For Footer (or other containers that change with theme) */
[data-theme="light"] footer .logo-white { display: none; }
[data-theme="light"] footer .logo-dark { display: block; }

[data-theme="dark"] footer .logo-white { display: block; }
[data-theme="dark"] footer .logo-dark { display: none; }

/* Mobile Nav */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-color);
    z-index: 60;
    transition: right 0.4s cubic-bezier(0.77, 0, 0.175, 1);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.mobile-menu.active {
    right: 0;
}

/* Cards & Interactions */
.hover-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.hover-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.08);
}
[data-theme="dark"] .hover-card:hover {
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
}

/* Progress bar */
.scroll-progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    z-index: 100;
    background: transparent;
}
.scroll-progress-bar {
    height: 100%;
    background: var(--color-accent);
    width: 0%;
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Footer */
.footer-link {
    color: var(--text-muted);
    transition: color 0.3s ease;
}
.footer-link:hover {
    color: var(--color-accent);
}

/* Back to top */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 40;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
#back-to-top.visible {
    opacity: 1;
    visibility: visible;
}
#back-to-top:hover {
    background-color: var(--color-accent);
    transform: translateY(-3px);
}