/* ==========================================================================
   Global Variables & Design System
   ========================================================================== */
:root {
    /* ========================================
       Core Color Palette - Limited Colors
       ======================================== */

    /* Primary: Green - Main actions (Submit, Confirm) */
    --primary-color: #4CAF50;
    --primary-hover: #43a047;
    --primary-light: #81c784;

    /* Secondary: Blue - Links, Secondary actions */
    --secondary-color: #3b82f6;
    --secondary-hover: #2563eb;
    --secondary-light: #60a5fa;

    /* Accent: Used sparingly for emphasis */
    --accent-color: #667eea;
    --accent-hover: #5a67d8;

    /* Backgrounds */
    --bg-body-default: #f5f5f5;
    --bg-body-wheat: #f5e6d3;
    --bg-dark: #2c3e50;

    /* Glass Card */
    --glass-bg-light: #7192b0;
    --glass-bg-dark: linear-gradient(135deg, #2c3e50 0%, #4ca1af 100%);
    --glass-border-dark: rgba(255, 255, 255, 0.05);

    /* Text */
    --text-main: #2c3e50;
    --text-white: #f2f2f2;
    --text-muted: #666;

    /* Links - Use secondary color for consistency */
    --link-color: var(--secondary-color);
    --link-hover: var(--secondary-hover);

    /* Status */
    --success-bg: #ecf9f0;
    --success-text: #155724;
    --success-border: #28a745;
    --error-bg: #fee;
    --error-text: #c33;
    --error-border: #c33;
    --info-bg: #e7f3ff;
    --info-text: #0066cc;
    --info-border: #0066cc;

    /* Layout */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.3);

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

[data-bs-theme="dark"] {
    --bg-body-default: #121212;
    --bg-body-wheat: #121212;
    --text-main: #e0e0e0;
    --text-muted: #aaa;
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.4);

    /* Dark mode link colors */
    --link-color: var(--secondary-light);
    --link-hover: var(--secondary-color);
}

/* ==========================================================================
   Global Reset & Base
   ========================================================================== */
html,
body {
    max-width: 100%;
    overflow-x: hidden;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    scroll-behavior: smooth;
    transition: background-color var(--transition-normal);
}

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

a:hover {
    opacity: 0.8;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #f0f0f0;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

[data-bs-theme="dark"] ::-webkit-scrollbar-track {
    background: #2d2d2d;
}

[data-bs-theme="dark"] ::-webkit-scrollbar-thumb {
    background: #666;
}

[data-bs-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: #888;
}

/* ==========================================================================
   Navbar
   ========================================================================== */
.navbar-custom {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    padding: 0.5rem 1rem;
    box-shadow: var(--shadow-sm);
}

[data-bs-theme="dark"] .navbar-custom {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
}

.navbar-custom .navbar-brand,
.navbar-custom .nav-link {
    color: var(--text-white);
    font-size: 1.35rem;
    padding: 0.5rem 1rem;
    transition: all var(--transition-normal);
    border-radius: 6px;
}

.navbar-custom .nav-link:hover {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(76, 175, 80, 0.3);
}

/* Dropdown */
.dropdown-menu {
    background: #2c3e50;
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    margin-top: 0.5rem;
    min-width: 200px;
}

.dropdown-item {
    color: var(--text-white);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 8px;
}

.dropdown-item:hover,
.dropdown-item.active,
.dropdown-item:focus {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: #fff;
}

.dropdown-divider {
    background: rgba(255, 255, 255, 0.1);
    margin: 0.5rem 0;
}

.navbar-toggler {
    border-color: var(--text-white);
}

.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%28255, 255, 255, 0.75%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ==========================================================================
   Alerts (Used across multiple pages)
   ========================================================================== */
.alert {
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    border-left: 4px solid;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

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

.alert-success {
    background: var(--success-bg);
    color: var(--success-text);
    border-color: var(--success-border);
}

.alert-error {
    background: var(--error-bg);
    color: var(--error-text);
    border-color: var(--error-border);
}

.alert-info {
    background: var(--info-bg);
    color: var(--info-text);
    border-color: var(--info-border);
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
    transition: background-color var(--transition-normal), color var(--transition-normal);
    background-color: rgba(0, 0, 0, 0.03);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

footer a {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
}

footer a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

[data-bs-theme="dark"] footer {
    background-color: #1a1a1a !important;
    color: #adb5bd !important;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

[data-bs-theme="dark"] footer a {
    color: var(--primary-color) !important;
}

[data-bs-theme="dark"] footer a:hover {
    color: #66bb6a !important;
}

/* ==========================================================================
   Toast
   ========================================================================== */
#app-toast {
    min-width: 400px;
    max-width: 500px;
    font-size: 1.1rem;
}

#app-toast .toast-header {
    font-size: 1.2rem;
    padding: 0.75rem 1rem;
}

#app-toast .toast-body {
    font-size: 1.1rem;
    padding: 1rem;
    line-height: 1.6;
}

#app-toast .bi {
    font-size: 1.3rem;
}

@media (max-width: 768px) {
    #app-toast {
        min-width: 320px;
        max-width: 90vw;
        font-size: 1rem;
    }
}

/* Theme Toggle */
#theme-toggle {
    color: var(--text-white);
    padding: 0.5rem;
    transition: all var(--transition-normal);
}

#theme-toggle:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

#theme-icon {
    font-size: 1.3rem;
}

/* Back Link (Used in Dashboard pages) */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--link-color);
    text-decoration: none;
    margin-bottom: 20px;
    transition: all var(--transition-normal);
}

.back-link:hover {
    color: var(--link-hover);
    transform: translateX(-3px);
}