/* ============================================
   COMPLETE THEME SYSTEM - Perfect Dark & Light
   Inspired by nextforum.hailovers.com
   ============================================ */

/* Note: Vendor-specific prefixes (-webkit-, -moz-) are intentional for cross-browser compatibility */

:root[data-theme="dark"] {
    /* Primary Colors */
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --primary-rgb: 59, 130, 246;
    
    /* Background Colors */
    --bg-primary: #0a0e1a;
    --bg-secondary: #0f172a;
    --bg-tertiary: #1e293b;
    --bg-quaternary: #334155;
    --bg-hover: rgba(59, 130, 246, 0.1);
    
    /* Border Colors */
    --border-color: #334155;
    --border-color-light: #475569;
    
    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-inverse: #0f172a;
    
    /* Status Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.6);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.7);
    
    /* Gradients */
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* Special */
    --backdrop-blur: blur(20px);
    --navbar-bg: rgba(15, 23, 42, 0.8);
    --card-bg: rgba(15, 23, 42, 0.6);
}

:root[data-theme="light"] {
    /* Primary Colors */
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --primary-rgb: 59, 130, 246;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fb; /* slightly darker for contrast */
    --bg-tertiary: #eef2f6;  /* subtle card background */
    --bg-quaternary: #e6edf6; /* row/striped background */
    --bg-hover: rgba(15, 23, 42, 0.03); /* neutral subtle hover */
    --hover-neutral: rgba(15, 23, 42, 0.04); /* slightly stronger for interactive elements */
    
    /* Border Colors */
    --border-color: #cbd5e1; /* darker main border for visibility */
    --border-color-light: #94a3b8; /* use a darker subtle line */
    
    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-inverse: #f8fafc;
    
    /* Status Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 10px 40px rgba(15, 23, 42, 0.10);
    --shadow-xl: 0 20px 60px rgba(15, 23, 42, 0.12);
    
    /* Gradients */
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* Special */
    --backdrop-blur: blur(20px);
    --navbar-bg: rgba(255, 255, 255, 0.95);
    --card-bg: rgba(255, 255, 255, 0.95);
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

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

*, *::before, *::after {
    transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    line-height: 1.6;
}

/* ============================================
   THEME TOGGLE BUTTON
   ============================================ */

.theme-toggle-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--gradient-1);
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle-btn:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: var(--shadow-xl);
}

.theme-toggle-btn:active {
    transform: scale(0.95);
}

@media (max-width: 768px) {
    .theme-toggle-btn {
        bottom: 20px;
        right: 20px;
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }
}

/* ============================================
   SCROLLBAR
   ============================================ */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-quaternary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* ============================================
   SELECTION
   ============================================ */

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

::-moz-selection {
    background: var(--primary-color);
    color: white;
}

/* ============================================
   FOCUS STYLES
   ============================================ */

:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ============================================
   BOOTSTRAP OVERRIDES
   ============================================ */

/* Navbar */
.navbar {
    background: var(--navbar-bg) !important;
    backdrop-filter: var(--backdrop-blur);
    border-bottom: 1px solid var(--border-color) !important;
}

/* Navbar (custom site header) - centralized styles for consistency */
.navbar-custom {
    background: var(--navbar-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar-custom.scrolled {
    background: rgba(15, 23, 42, 0.95);
    padding: 10px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--border-color);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.navbar-brand { font-size: 1.5rem; font-weight: 800; background: linear-gradient(135deg, var(--primary-color), #8b5cf6); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.nav-link { color: var(--text-secondary) !important; font-weight: 500; padding: 8px 16px !important; border-radius: 8px; transition: all 0.3s ease; }
.nav-link:hover { color: var(--text-primary) !important; background: rgba(59, 130, 246, 0.08); }
/* Cards */
.card {
    background: var(--bg-tertiary) !important; /* slightly darker than page */
    border: 1px solid rgba(15,23,42,0.06) !important; /* subtle but visible */
    color: var(--text-primary) !important;
}

.form-control,
.form-select {
    background: var(--bg-secondary) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
}

/* ============================================
   MODAL & AUTH BUTTON STYLES (GLOBAL)
   Ensures Login/Register/Contact modals look identical across pages
   ============================================ */

.modal-divider {
    text-align: center;
    margin: 25px 0;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.modal-divider::before,
.modal-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 45%;
    height: 1px;
    background: rgba(102, 126, 234, 0.12);
}

.modal-divider::before { left: 0; }
.modal-divider::after { right: 0; }

.btn-close {
    filter: invert(1);
    opacity: 0.8;
    transition: all 0.3s ease;
}

.btn-close:hover {
    opacity: 1;
    transform: rotate(90deg);
}

.btn-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    color: white;
    padding: 16px 24px;
    border-radius: 14px;
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: 0.3px;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 
        0 8px 24px rgba(102, 126, 234, 0.4),
        0 4px 12px rgba(118, 75, 162, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    width: 100%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.btn-gradient:hover::before {
    left: 100%;
}

.btn-gradient:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 
        0 12px 40px rgba(102, 126, 234, 0.6),
        0 8px 20px rgba(118, 75, 162, 0.5),
        0 0 60px rgba(102, 126, 234, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-gradient:active {
    transform: translateY(-1px) scale(0.98);
    box-shadow: 
        0 6px 20px rgba(102, 126, 234, 0.5),
        0 3px 10px rgba(118, 75, 162, 0.4);
}

.btn-gradient i {
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.btn-gradient:hover i {
    transform: scale(1.2) rotate(5deg);
}

.btn-outline:hover,
.btn-outline:focus {
    background: var(--hover-neutral) !important;
    border-color: rgba(15,23,42,0.08) !important;
}

.card-header {
    background: var(--bg-tertiary) !important;
    border-bottom: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
}

.card-body {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

.card-footer {
    background: var(--bg-tertiary) !important;
    border-top: 1px solid var(--border-color) !important;
}

/* Modals */
.modal-content {
    background: var(--bg-secondary) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
}

.modal-header {
    background: var(--bg-secondary) !important;
    border-bottom: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
}

.modal-body {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

.modal-footer {
    background: var(--bg-secondary) !important;
    border-top: 1px solid var(--border-color) !important;
}

.modal-title {
    color: var(--text-primary) !important;
}

.btn-close {
    filter: invert(var(--text-primary)) brightness(100%) contrast(100%);
}

/* Dropdowns */
.dropdown-menu {
    background: var(--bg-secondary) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: var(--shadow-lg) !important;
}

.dropdown-item {
    color: var(--text-primary) !important;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background: var(--hover-neutral) !important;
    color: var(--text-primary) !important;
}

.dropdown-divider {
    border-top-color: var(--border-color) !important;
}

/* Forms */
.form-control,
.form-select {
    background: var(--bg-tertiary) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
}

.form-control:focus,
.form-select:focus {
    background: var(--bg-tertiary) !important;
    border-color: var(--primary-color) !important;
    color: var(--text-primary) !important;
    box-shadow: 0 0 0 0.2rem rgba(var(--primary-rgb), 0.25) !important;
}

.form-control::placeholder {
    color: var(--text-muted) !important;
    opacity: 0.7;
}

.form-label {
    color: var(--text-primary) !important;
}

.form-text {
    color: var(--text-secondary) !important;
}

.form-check-input {
    background-color: var(--bg-tertiary) !important;
    border: 1px solid var(--border-color) !important;
}

.form-check-input:checked {
    background-color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
}

.form-check-label {
    color: var(--text-primary) !important;
}

/* Tables */
.table {
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

.table > :not(caption) > * > * {
    background-color: transparent !important;
    border-bottom-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
    background-color: var(--bg-quaternary) !important;
}

.table-hover > tbody > tr:hover > * {
    background-color: var(--hover-neutral) !important;
}

/* Alerts */
.alert {
    background: var(--bg-secondary) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
}

.alert-success {
    background: rgba(16, 185, 129, 0.15) !important;
    border-color: var(--success) !important;
    color: var(--success) !important;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.15) !important;
    border-color: var(--danger) !important;
    color: var(--danger) !important;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.15) !important;
    border-color: var(--warning) !important;
    color: var(--warning) !important;
}

.alert-info {
    background: rgba(59, 130, 246, 0.15) !important;
    border-color: var(--info) !important;
    color: var(--info) !important;
}

/* Badges */
.badge {
    background: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
}

.badge.bg-primary {
    background: var(--primary-color) !important;
    color: white !important;
}

.badge.bg-success {
    background: var(--success) !important;
    color: white !important;
}

.badge.bg-danger {
    background: var(--danger) !important;
    color: white !important;
}

/* Pagination */
.pagination .page-link {
    background: var(--bg-secondary) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
}

.pagination .page-link:hover {
    background: var(--hover-neutral) !important;
    border-color: var(--primary-color) !important;
    color: var(--primary-color) !important;
}

.pagination .page-item.active .page-link {
    background: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    color: white !important;
}

/* Breadcrumb */
.breadcrumb {
    background: var(--bg-secondary) !important;
}

.breadcrumb-item a {
    color: var(--primary-color) !important;
}

.breadcrumb-item.active {
    color: var(--text-secondary) !important;
}

/* List Group */
.list-group-item {
    background: var(--bg-secondary) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
}

.list-group-item:hover {
    background: var(--hover-neutral) !important;
}

/* Navbar Toggler */
.navbar-toggler {
    border-color: var(--border-color) !important;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(248, 250, 252, 0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

:root[data-theme="light"] .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(15, 23, 42, 0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

/* ============================================
   LOADING & ANIMATIONS
   ============================================ */

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--bg-quaternary);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   TOAST CONTAINER
   ============================================ */

#toastContainer {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 400px;
    pointer-events: none;
}

#toastContainer > * {
    pointer-events: auto;
}

/* ============================================
   LOADING OVERLAY
   ============================================ */

#loadingOverlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 14, 26, 0.95);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
    backdrop-filter: blur(10px);
    pointer-events: none;
}

:root[data-theme="light"] #loadingOverlay {
    background: rgba(255, 255, 255, 0.95);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.fade-in {
    animation: fadeIn 0.3s ease;
}

.hidden {
    display: none !important;
}

.blur {
    filter: blur(5px);
}

/* Text Colors */
.text-theme-primary {
    color: var(--text-primary) !important;
}

.text-theme-secondary {
    color: var(--text-secondary) !important;
}

.text-theme-muted {
    color: var(--text-muted) !important;
}

/* Background Colors */
.bg-theme-primary {
    background: var(--bg-primary) !important;
}

.bg-theme-secondary {
    background: var(--bg-secondary) !important;
}

.bg-theme-tertiary {
    background: var(--bg-tertiary) !important;
}

/* Border Colors */
.border-theme {
    border-color: var(--border-color) !important;
}

/* ============================================
   LINKS
   ============================================ */

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-hover);
}

/* ============================================
   BUTTONS (if not using Bootstrap)
   ============================================ */

.btn {
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

.btn:hover {
    background: var(--hover-neutral) !important;
}

/* Particles canvas should not intercept header clicks */
#particles-js {
    pointer-events: none; /* allow clicks through to header */
}

/* ============================================
   VALIDATION STATUS COLORS
   ============================================ */
.text-danger { color: var(--danger) !important; }
.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-info { color: var(--info) !important; }
.text-muted-theme { color: var(--text-muted) !important; }