/* ==========================================================================
   Layout, Typography & Global Styles
   ========================================================================== */

/* Global Reset & Typography */
body {
    font-size: 0.95rem;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
    transition: background-color var(--transition-speed) var(--transition-ease),
        color var(--transition-speed) var(--transition-ease);
}

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

/* Core Layout Structure (Sidebar + Main) */
:root {
    --sidebar-width: 280px;
}

.dashboard-layout {
    display: flex;
    min-height: 100vh;
}

.main-content {
    margin-left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    transition: margin-left var(--transition-speed) ease, width var(--transition-speed) ease;
    overflow-x: hidden;
}

.main-content .container-fluid {
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

/* Sidebar Styles */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--bs-border-color);
    background-color: var(--bs-tertiary-bg);
    /* Added explicit bg */
    overflow-y: auto;
    transition: width var(--transition-speed) ease;
}

.sidebar-sticky {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.sidebar-header .navbar-brand span {
    font-size: 0.95em;
    margin-left: 0.25rem;
}

.sidebar-heading {
    font-size: 0.75rem;
    font-weight: 600;
}

.sidebar-footer {
    background-color: var(--bs-body-bg);
}

/* Sidebar Form Elements (Smaller) */
.sidebar .form-label-sm {
    font-size: 0.8rem;
    margin-bottom: 0.2rem;
}

.sidebar .form-control-sm,
.sidebar .form-select-sm {
    font-size: 0.85rem;
}

.sidebar .btn-sm {
    font-size: 0.85rem;
    padding: 0.25rem 0.6rem;
}

.sidebar .invalid-feedback {
    font-size: 0.75rem;
}

/* Header & Navbar */
.app-header {
    background: var(--gradient-subtle);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--bs-border-color);
    transition: all var(--transition-speed) var(--transition-ease);
}

.app-header .navbar-brand {
    font-size: 1.2rem;
    font-weight: 700;
    transition: transform var(--transition-speed) var(--transition-ease);
}

.app-header .navbar-brand:hover {
    transform: scale(1.02);
}

.app-header .navbar-brand .bi {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse-glow 2s infinite;
}

/* Theme Toggle Button */
.theme-toggle-btn {
    color: var(--bs-secondary-color);
    border: 1px solid transparent;
    padding: 0.5rem 0.85rem;
    border-radius: 10px;
    transition: all var(--transition-speed) var(--transition-ease);
}

.theme-toggle-btn:hover,
.theme-toggle-btn:focus {
    color: var(--bs-emphasis-color);
    background-color: var(--bs-secondary-bg);
    transform: rotate(180deg);
    box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.2);
}

/* Theme Icon Display Logic */
[data-bs-theme="light"] #theme-icon-dark {
    display: inline-block;
}

[data-bs-theme="light"] #theme-icon-light {
    display: none;
}

[data-bs-theme="dark"] #theme-icon-dark {
    display: none;
}

[data-bs-theme="dark"] #theme-icon-light {
    display: inline-block;
}

/* Responsive Layout */
@media (max-width: 991.98px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--bs-border-color);
    }

    .sidebar-sticky {
        min-height: auto;
    }

    .main-content {
        width: 100%;
        margin-left: 0;
    }

    .sidebar-footer {
        border-top: none !important;
    }
}

/* Footer */
footer {
    margin-top: 3rem;
    padding: 2rem 0;
    border-top: 2px solid var(--bs-border-color);
    background: var(--gradient-subtle);
}

footer p {
    color: var(--bs-secondary-color);
    font-weight: 500;
}

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

::-webkit-scrollbar-track {
    background: var(--bs-secondary-bg);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 10px;
    transition: background var(--transition-speed) var(--transition-ease);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, hsl(var(--primary-hue), var(--primary-sat), 40%) 0%, hsl(var(--primary-hue), var(--primary-sat), 30%) 100%);
}

/* Keyframe Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes pulse-glow {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(var(--primary-rgb), 0.4);
    }

    50% {
        box-shadow: 0 0 20px 8px rgba(var(--primary-rgb), 0);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }

    100% {
        background-position: 1000px 0;
    }
}