/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Variables */
    --primary: #0f172a;
    --primary-light: #1e293b;
    --primary-dark: #020617;
    --secondary: #64748b;
    --accent: #3b82f6;
    --accent-dark: #1d4ed8;
    --background: #ffffff;
    --surface: #f8fafc;
    --border: #e2e8f0;
    --border-dark: #cbd5e1;
    --text: #0f172a;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    
    /* Radius */
    --radius-sm: 0.125rem;
    --radius: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition: all 0.2s ease-in-out;
}

html {
    font-size: 16px;
    line-height: 1.5;
}

body {
    font-family: var(--font-family);
    color: var(--text);
    background-color: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== LAYOUT ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-4);
}

/* Grid System */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(var(--spacing-3) * -1);
}

.col {
    flex: 1;
    padding: 0 var(--spacing-3);
}

/* Display Utilities */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-inline { display: inline !important; }
.d-inline-block { display: inline-block !important; }
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }
.d-grid { display: grid !important; }

/* Flexbox Utilities */
.flex-row { flex-direction: row !important; }
.flex-column { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }
.flex-nowrap { flex-wrap: nowrap !important; }
.justify-start { justify-content: flex-start !important; }
.justify-center { justify-content: center !important; }
.justify-end { justify-content: flex-end !important; }
.justify-between { justify-content: space-between !important; }
.justify-around { justify-content: space-around !important; }
.align-start { align-items: flex-start !important; }
.align-center { align-items: center !important; }
.align-end { align-items: flex-end !important; }
.align-stretch { align-items: stretch !important; }

/* ===== SPACING ===== */
/* Margin */
.m-0 { margin: 0 !important; }
.m-1 { margin: var(--spacing-1) !important; }
.m-2 { margin: var(--spacing-2) !important; }
.m-3 { margin: var(--spacing-3) !important; }
.m-4 { margin: var(--spacing-4) !important; }
.m-5 { margin: var(--spacing-5) !important; }
.m-6 { margin: var(--spacing-6) !important; }
.m-8 { margin: var(--spacing-8) !important; }
.m-auto { margin: auto !important; }

/* Margin Top */
.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--spacing-1) !important; }
.mt-2 { margin-top: var(--spacing-2) !important; }
.mt-3 { margin-top: var(--spacing-3) !important; }
.mt-4 { margin-top: var(--spacing-4) !important; }
.mt-5 { margin-top: var(--spacing-5) !important; }
.mt-6 { margin-top: var(--spacing-6) !important; }
.mt-8 { margin-top: var(--spacing-8) !important; }

/* Margin Bottom */
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--spacing-1) !important; }
.mb-2 { margin-bottom: var(--spacing-2) !important; }
.mb-3 { margin-bottom: var(--spacing-3) !important; }
.mb-4 { margin-bottom: var(--spacing-4) !important; }
.mb-5 { margin-bottom: var(--spacing-5) !important; }
.mb-6 { margin-bottom: var(--spacing-6) !important; }
.mb-8 { margin-bottom: var(--spacing-8) !important; }

/* Margin Left/Right */
.ml-0 { margin-left: 0 !important; }
.ml-1 { margin-left: var(--spacing-1) !important; }
.ml-2 { margin-left: var(--spacing-2) !important; }
.ml-3 { margin-left: var(--spacing-3) !important; }
.ml-4 { margin-left: var(--spacing-4) !important; }
.ml-auto { margin-left: auto !important; }

.mr-0 { margin-right: 0 !important; }
.mr-1 { margin-right: var(--spacing-1) !important; }
.mr-2 { margin-right: var(--spacing-2) !important; }
.mr-3 { margin-right: var(--spacing-3) !important; }
.mr-4 { margin-right: var(--spacing-4) !important; }
.mr-auto { margin-right: auto !important; }

/* Padding */
.p-0 { padding: 0 !important; }
.p-1 { padding: var(--spacing-1) !important; }
.p-2 { padding: var(--spacing-2) !important; }
.p-3 { padding: var(--spacing-3) !important; }
.p-4 { padding: var(--spacing-4) !important; }
.p-5 { padding: var(--spacing-5) !important; }
.p-6 { padding: var(--spacing-6) !important; }
.p-8 { padding: var(--spacing-8) !important; }

/* Padding Top */
.pt-0 { padding-top: 0 !important; }
.pt-1 { padding-top: var(--spacing-1) !important; }
.pt-2 { padding-top: var(--spacing-2) !important; }
.pt-3 { padding-top: var(--spacing-3) !important; }
.pt-4 { padding-top: var(--spacing-4) !important; }
.pt-5 { padding-top: var(--spacing-5) !important; }
.pt-6 { padding-top: var(--spacing-6) !important; }
.pt-8 { padding-top: var(--spacing-8) !important; }

/* Padding Bottom */
.pb-0 { padding-bottom: 0 !important; }
.pb-1 { padding-bottom: var(--spacing-1) !important; }
.pb-2 { padding-bottom: var(--spacing-2) !important; }
.pb-3 { padding-bottom: var(--spacing-3) !important; }
.pb-4 { padding-bottom: var(--spacing-4) !important; }
.pb-5 { padding-bottom: var(--spacing-5) !important; }
.pb-6 { padding-bottom: var(--spacing-6) !important; }
.pb-8 { padding-bottom: var(--spacing-8) !important; }

/* Padding Left/Right */
.pl-0 { padding-left: 0 !important; }
.pl-1 { padding-left: var(--spacing-1) !important; }
.pl-2 { padding-left: var(--spacing-2) !important; }
.pl-3 { padding-left: var(--spacing-3) !important; }
.pl-4 { padding-left: var(--spacing-4) !important; }
.pl-5 { padding-left: var(--spacing-5) !important; }
.pl-6 { padding-left: var(--spacing-6) !important; }

.pr-0 { padding-right: 0 !important; }
.pr-1 { padding-right: var(--spacing-1) !important; }
.pr-2 { padding-right: var(--spacing-2) !important; }
.pr-3 { padding-right: var(--spacing-3) !important; }
.pr-4 { padding-right: var(--spacing-4) !important; }
.pr-5 { padding-right: var(--spacing-5) !important; }
.pr-6 { padding-right: var(--spacing-6) !important; }

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    margin-bottom: var(--spacing-4);
    color: var(--primary);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-4);
    line-height: 1.6;
}

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

a:hover {
    text-decoration: none;
    color: var(--text-light);
}

/* Text Utilities */
.text-xs { font-size: 0.75rem !important; }
.text-sm { font-size: 0.875rem !important; }
.text-base { font-size: 1rem !important; }
.text-lg { font-size: 1.125rem !important; }
.text-xl { font-size: 1.25rem !important; }
.text-2xl { font-size: 1.5rem !important; }
.text-3xl { font-size: 1.875rem !important; }
.text-4xl { font-size: 2.25rem !important; }

.text-left { text-align: left !important; }
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }
.text-justify { text-align: justify !important; }

.text-primary { color: var(--primary) !important; }
.text-secondary { color: var(--secondary) !important; }
.text-accent { color: var(--accent) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-light { color: var(--text-light) !important; }
.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-error { color: var(--error) !important; }

.font-light { font-weight: 300 !important; }
.font-normal { font-weight: 400 !important; }
.font-medium { font-weight: 500 !important; }
.font-semibold { font-weight: 600 !important; }
.font-bold { font-weight: 700 !important; }

.font-mono { font-family: var(--font-mono) !important; }

/* ===== COMPONENTS ===== */
/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius);
    border: 1px solid transparent;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.25;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    outline: none;
    position: relative;
    overflow: hidden;
}

.btn:focus {
    box-shadow: 0 0 0 2px var(--accent);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-light);
    border-color: var(--primary-light);
}

.btn-secondary {
    background-color: var(--surface);
    color: var(--text);
    border-color: var(--border);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--border);
}

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

.btn-outline:hover:not(:disabled) {
    background-color: var(--surface);
}

.btn-ghost {
    background-color: transparent;
    color: var(--text);
    border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
    background-color: var(--surface);
}

.btn-sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: 0.75rem;
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: 1rem;
}

/* Cards */
.card {
    background-color: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    padding: 20px;
    margin-bottom: var(--spacing-4);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--border);
}

.card-body {
    padding: var(--spacing-6);
}

.card-footer {
    padding: var(--spacing-6);
    border-top: 1px solid var(--border);
    background-color: var(--surface);
}

/* Alerts */
.alert {
    padding: var(--spacing-4);
    border-radius: var(--radius);
    border: 1px solid;
    margin-bottom: var(--spacing-4);
}

.alert-primary {
    background-color: #dbeafe;
    border-color: #93c5fd;
    color: #1e40af;
}

.alert-success {
    background-color: #d1fae5;
    border-color: #86efac;
    color: #065f46;
}

.alert-warning {
    background-color: #fef3c7;
    border-color: #fcd34d;
    color: #92400e;
}

.alert-error {
    background-color: #fee2e2;
    border-color: #fca5a5;
    color: #991b1b;
}

/* Forms */
.form-control {
    display: block;
    width: 100%;
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background-color: var(--background);
    color: var(--text);
    font-size: 0.875rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.form-control:disabled {
    background-color: var(--surface);
    opacity: 0.6;
    cursor: not-allowed;
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
}

.form-group {
    margin-bottom: var(--spacing-4);
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1;
}

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

.badge-secondary {
    background-color: var(--surface);
    color: var(--text);
}

.badge-outline {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--border);
}

/* ===== UTILITIES ===== */
/* Width */
.w-auto { width: auto !important; }
.w-full { width: 100% !important; }
.w-screen { width: 100vw !important; }
.w-fit { width: fit-content !important; }

/* Height */
.h-auto { height: auto !important; }
.h-full { height: 100% !important; }
.h-screen { height: 100vh !important; }
.h-fit { height: fit-content !important; }

/* Position */
.static { position: static !important; }
.relative { position: relative !important; }
.absolute { position: absolute !important; }
.fixed { position: fixed !important; }
.sticky { position: sticky !important; }

/* Border */
.border { border: 1px solid var(--border) !important; }
.border-0 { border: 0 !important; }
.border-t { border-top: 1px solid var(--border) !important; }
.border-b { border-bottom: 1px solid var(--border) !important; }
.border-l { border-left: 1px solid var(--border) !important; }
.border-r { border-right: 1px solid var(--border) !important; }

/* Border Radius */
.rounded-none { border-radius: 0 !important; }
.rounded-sm { border-radius: var(--radius-sm) !important; }
.rounded { border-radius: var(--radius) !important; }
.rounded-md { border-radius: var(--radius-md) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-xl { border-radius: var(--radius-xl) !important; }
.rounded-full { border-radius: 9999px !important; }

/* Shadow */
.shadow-none { box-shadow: none !important; }
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow { box-shadow: var(--shadow) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.shadow-xl { box-shadow: var(--shadow-xl) !important; }

/* Background */
.bg-white { background-color: var(--background) !important; }
.bg-surface { background-color: var(--surface) !important; }
.bg-primary { background-color: var(--primary) !important; }
.bg-secondary { background-color: var(--secondary) !important; }
.bg-accent { background-color: var(--accent) !important; }
.bg-transparent { background-color: transparent !important; }

/* Opacity */
.opacity-0 { opacity: 0 !important; }
.opacity-25 { opacity: 0.25 !important; }
.opacity-50 { opacity: 0.5 !important; }
.opacity-75 { opacity: 0.75 !important; }
.opacity-100 { opacity: 1 !important; }

/* Overflow */
.overflow-hidden { overflow: hidden !important; }
.overflow-visible { overflow: visible !important; }
.overflow-scroll { overflow: scroll !important; }
.overflow-auto { overflow: auto !important; }

/* Transition */
.transition { transition: var(--transition) !important; }
.transition-none { transition: none !important; }

/* Cursor */
.cursor-pointer { cursor: pointer !important; }
.cursor-not-allowed { cursor: not-allowed !important; }
.cursor-default { cursor: default !important; }

/* Select */
.select-none { user-select: none !important; }
.select-text { user-select: text !important; }
.select-all { user-select: all !important; }

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    transform: scale(0.9) translateY(-20px);
    transition: all 0.3s ease;
}

.modal.show .modal-content {
    transform: scale(1) translateY(0);
}

.modal-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    padding: var(--spacing-1);
    border-radius: var(--radius);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.modal-close:hover {
    background-color: var(--surface);
    color: var(--text);
}

.modal-body {
    padding: var(--spacing-6);
    overflow-y: auto;
}

.modal-footer {
    padding: var(--spacing-6);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-3);
}

/* Table */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-4);
    font-size: 0.875rem;
}

.table th,
.table td {
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.table th {
    background-color: var(--surface);
    font-weight: 600;
    color: var(--text);
    border-top: 1px solid var(--border);
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background-color: var(--surface);
}

.table-striped tbody tr:nth-child(even) {
    background-color: rgba(248, 250, 252, 0.5);
}

.table-striped tbody tr:nth-child(even):hover {
    background-color: var(--surface);
}

.table-bordered {
    border: 1px solid var(--border);
}

.table-bordered th,
.table-bordered td {
    border: 1px solid var(--border);
}

.table-sm th,
.table-sm td {
    padding: var(--spacing-2) var(--spacing-3);
}

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Table utilities */
.table-dark {
    background-color: var(--primary);
    color: white;
}

.table-dark th,
.table-dark td {
    border-color: var(--primary-light);
}

.table-dark tbody tr:hover {
    background-color: var(--primary-light);
}

.table-light {
    background-color: var(--surface);
    color: var(--text);
}

/* images */
.img-responsive {
    max-width: 100%;
    height: auto;
}

.img-tiny {
    width: 10%;
    height: 10%;
}

.img-small {
    width: 20%;
    height: 20%;
}

/* .img-small {
    width: 25%;
} */
.img-medium {
    width: 50%;
    height: 50%;;
}
.img-large {
    width: 75%;
    height: 75%;;
}


/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1;
}

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

.badge-secondary {
    background-color: var(--surface);
    color: var(--text);
}

.badge-outline {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--border);
}

/* Navbar */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-3) var(--spacing-4);
    background-color: var(--background);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    display: flex;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--accent);
}

.navbar-nav {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.navbar-nav .nav-item {
    margin-left: var(--spacing-4);
}

.navbar-nav .nav-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-2);
    color: var(--text);
    text-decoration: none;
    border-radius: var(--radius);
    transition: var(--transition);
}

.navbar-nav .nav-link:hover {
    background-color: var(--surface);
    color: var(--accent);
}

.navbar-nav .nav-link.active {
    background-color: var(--accent);
    color: white;
}

.navbar-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--spacing-2);
}

.navbar-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text);
    margin: 2px 0;
    transition: var(--transition);
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 250px;
    height: 100vh;
    background-color: var(--background);
    border-right: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    z-index: 999;
    overflow-y: auto;
    transition: transform 0.3s ease;
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

.sidebar-header {
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--border);
}

.sidebar-brand {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
}

.sidebar-nav {
    list-style: none;
    margin: 0;
    padding: var(--spacing-2) 0;
}

.sidebar-nav .nav-item {
    margin-bottom: var(--spacing-1);
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--text);
    text-decoration: none;
    transition: var(--transition);
}

.sidebar-nav .nav-link:hover {
    background-color: var(--surface);
    color: var(--accent);
}

.sidebar-nav .nav-link.active {
    background-color: var(--accent);
    color: white;
}

.sidebar-nav .nav-link .icon {
    margin-right: var(--spacing-2);
    width: 18px;
    height: 18px;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
    display: none;
}

.sidebar-overlay.active {
    display: block;
}

.main-content {
    margin-left: 250px;
    transition: margin-left 0.3s ease;
}

.main-content.expanded {
    margin-left: 0;
}

/* Progress Bar */
.progress {
    width: 100%;
    height: 8px;
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
}

.progress-bar {
    height: 100%;
    background-color: var(--accent);
    border-radius: var(--radius-lg);
    transition: width 0.3s ease;
    position: relative;
}

.progress-bar.animated {
    background-image: linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.15) 75%,
        transparent 75%,
        transparent
    );
    background-size: 20px 20px;
    animation: progress-bar-stripes 1s linear infinite;
}

@keyframes progress-bar-stripes {
    0% { background-position: 0 0; }
    100% { background-position: 20px 0; }
}

.progress-sm {
    height: 4px;
}

.progress-lg {
    height: 12px;
}

.progress-xl {
    height: 16px;
}

/* Progress variants */
.progress-success .progress-bar {
    background-color: var(--success);
}

.progress-warning .progress-bar {
    background-color: var(--warning);
}

.progress-error .progress-bar {
    background-color: var(--error);
}

/* Images */
.img-responsive {
    max-width: 100%;
    height: auto;
}

.img-rounded {
    border-radius: var(--radius);
}

.img-circle {
    border-radius: 50%;
}

.img-thumbnail {
    padding: var(--spacing-1);
    background-color: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    max-width: 100%;
    height: auto;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border);
}

.avatar-sm {
    width: 32px;
    height: 32px;
}

.avatar-lg {
    width: 56px;
    height: 56px;
}

.avatar-xl {
    width: 72px;
    height: 72px;
}

.image-overlay {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius);
}

.image-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(0, 0, 0, 0.1) 50%,
        rgba(0, 0, 0, 0.4) 100%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-overlay:hover::before {
    opacity: 1;
}

.image-overlay .overlay-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-4);
    color: white;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.image-overlay:hover .overlay-content {
    transform: translateY(0);
}

/* spacers */
.spacer {
    height: var(--spacing-4);
}
.spacer-sm {
    height: var(--spacing-2);
}
.spacer-md {
    height: var(--spacing-6);
}
.spacer-lg {
    height: var(--spacing-8);
}
.spacer-xl {
    height: var(--spacing-10);
}


/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .d-sm-none { display: none !important; }
    .d-sm-block { display: block !important; }
    .d-sm-flex { display: flex !important; }
    .text-sm-center { text-align: center !important; }
    .text-sm-left { text-align: left !important; }
    .flex-sm-column { flex-direction: column !important; }
    .justify-sm-center { justify-content: center !important; }
    .img-small {
        width: 100%;
        height: auto;
    }
    .img-medium {
        width: 100%;
        height: auto;
    }
    .img-large {
        width: 100%;
        height: auto;
    }
    .img-tiny {
        width: 50%;
        height: auto;
        object-fit: cover;
        border-radius: var(--radius);
    }
}

@media (min-width: 769px) {
    .d-md-none { display: none !important; }
    .d-md-block { display: block !important; }
    .d-md-flex { display: flex !important; }
    .text-md-center { text-align: center !important; }
    .text-md-left { text-align: left !important; }
    .flex-md-row { flex-direction: row !important; }
    .justify-md-start { justify-content: flex-start !important; }
    
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

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