/* =========================
   ROOT VARIABLES (LIGHT)
========================= */
:root {
    --bg: #f8fafc;
    --card: #ffffff;
    --text: #0f172a;
    --muted: #475569;
    --border: #e2e8f0;

    --primary: #6366f1;
    --primary-dark: #4f46e5;

    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.12);

    --radius: 12px;
    --transition: all 0.25s ease;
}

/* =========================
   DARK MODE (FIXED VISIBILITY)
========================= */
body.dark {
    --bg: #0b1220;
    --card: #111827;
    --text: #f1f5f9;
    /* brighter text */
    --muted: #cbd5f5;
    /* FIXED muted visibility */
    --border: #334155;

    --primary: #818cf8;
    --primary-dark: #6366f1;

    --success: #4ade80;
    --warning: #fbbf24;
    --danger: #f87171;
    --info: #22d3ee;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.7);
}

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

body {
    font-family: "Segoe UI", system-ui, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    transition: var(--transition);
    line-height: 1.6;
}

/* =========================
   HEADINGS
========================= */
h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--text);
    font-weight: 600;
}

/* =========================
   TEXT
========================= */
p,
span,
li {
    color: var(--text);
}

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

/* =========================
   LINKS
========================= */
a {
    color: var(--primary);
    text-decoration: none;
}

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

/* =========================
   NAVBAR
========================= */
.navbar {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.navbar a {
    color: var(--text);
    font-weight: 500;
}

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

/* =========================
   BUTTONS
========================= */
.btn {
    border-radius: var(--radius);
    transition: var(--transition);
    font-weight: 500;
}

/* Primary */
.btn-primary {
    background: var(--primary);
    border: none;
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* Success */
.btn-success {
    background: var(--success);
    border: none;
    color: #fff;
}

/* Warning */
.btn-warning {
    background: var(--warning);
    border: none;
    color: #111;
}

/* Danger */
.btn-danger {
    background: var(--danger);
    border: none;
    color: #fff;
}

/* =========================
   CARDS
========================= */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

/* Images uniform */
.card-img-top {
    width: 100%;
    height: 210px;
    object-fit: cover;
    border-radius: var(--radius);
}

/* Card text fix */
.card h5 {
    color: var(--text);
}

.card p {
    color: var(--muted);
}

/* =========================
   FORMS
========================= */
input,
select,
textarea {
    width: 100%;
    padding: 10px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
}

input::placeholder {
    color: var(--muted);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

/* =========================
   TABLES
========================= */
table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    padding: 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

th {
    background: rgba(99, 102, 241, 0.08);
}

/* =========================
   ALERTS
========================= */
.alert {
    border-radius: var(--radius);
    padding: 12px;
}

.alert-success {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success);
}

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

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

.alert-info {
    background: rgba(6, 182, 212, 0.15);
    color: var(--info);
}

/* =========================
   MODAL
========================= */
.modal-content {
    background: var(--card);
    color: var(--text);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}

/* =========================
   FOOTER
========================= */
footer {
    background: var(--card);
    color: var(--muted);
    border-top: 1px solid var(--border);
    padding: 15px;
}

/* =========================
   SCROLLBAR
========================= */
::-webkit-scrollbar {
    width: 8px;
}

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

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

/* =========================
   UTILITIES
========================= */
.hidden {
    display: none;
}

/* =========================
/* =========================
   DARK MODE COMPONENT FIXES
========================= */

body.dark {
    background-color: var(--bg);
    color: var(--text);
}

/* ================= NAVBAR ================= */
body.dark .navbar {
    background: var(--card);
    border-bottom: 1px solid var(--border);
}

body.dark .navbar .nav-link {
    color: var(--text) !important;
}

body.dark .navbar .nav-link:hover {
    color: var(--primary) !important;
}

/* =========================
   MOBILE RESPONSIVENESS (@media queries)
========================= */

/* Tablets and below */
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }

    .container {
        padding: 10px;
    }

    .navbar {
        padding: 0.5rem 0;
    }

    .navbar-brand {
        font-size: 1.2rem;
    }

    .card {
        padding: 12px;
        margin-bottom: 12px;
    }

    .btn {
        padding: 8px 12px;
        font-size: 14px;
    }

    .btn-block,
    .w-100 {
        width: 100%;
    }

    table {
        font-size: 12px;
    }

    th,
    td {
        padding: 8px !important;
    }

    .col-md-3,
    .col-md-4,
    .col-md-6 {
        margin-bottom: 10px;
    }

    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.2rem;
    }

    .card-body {
        padding: 1rem;
    }

    input,
    select,
    textarea {
        padding: 8px;
        font-size: 16px;
    }

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

/* Small phones */
@media (max-width: 480px) {
    body {
        font-size: 13px;
    }

    .container {
        padding: 8px;
        margin-top: 70px !important;
    }

    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        z-index: 1000;
        padding: 0.25rem 0;
    }

    .navbar-brand {
        font-size: 1.1rem;
    }

    .navbar-collapse {
        padding: 10px;
    }

    .dropdown-menu {
        min-width: 180px;
    }

    .card {
        padding: 10px;
        border-radius: 8px;
    }

    .btn {
        padding: 6px 10px;
        font-size: 13px;
        width: 100%;
    }

    .btn-group,
    .btn-toolbar {
        flex-direction: column;
        gap: 8px;
    }

    .btn+.btn {
        margin-left: 0;
        margin-top: 8px;
    }

    table {
        font-size: 11px;
    }

    th,
    td {
        padding: 6px !important;
    }

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

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.2rem;
    }

    h3 {
        font-size: 1rem;
    }

    h4,
    h5,
    h6 {
        font-size: 0.95rem;
    }

    .row {
        margin: 0;
    }

    [class*='col-'] {
        padding: 4px;
    }

    .modal {
        padding: 0 !important;
    }

    .modal-dialog {
        margin: 10px;
        width: 100%;
        max-width: calc(100% - 20px);
    }

    .modal-body {
        padding: 1rem;
    }

    input,
    select,
    textarea {
        padding: 10px;
        font-size: 16px;
        border-radius: 6px;
    }

    input:focus,
    select:focus,
    textarea:focus {
        outline: none;
        border-color: var(--primary);
    }

    .alert {
        padding: 10px;
        font-size: 13px;
    }

    footer {
        padding: 10px;
        font-size: 12px;
    }

    .text-center {
        text-align: center;
    }

    .text-muted {
        font-size: 12px;
    }

    .badge {
        font-size: 11px;
        padding: 3px 6px;
    }
}
}

/* Fix navbar collapse menu */
body.dark .navbar-collapse {
    background: var(--card);
    padding: 10px;
    border-radius: var(--radius);
}

/* ================= DROPDOWNS ================= */
body.dark .dropdown-menu {
    background: var(--card);
    border: 1px solid var(--border);
}

body.dark .dropdown-item {
    color: var(--text);
}

body.dark .dropdown-item:hover {
    background: var(--primary);
    color: #fff;
}

/* ================= CARDS ================= */
body.dark .card {
    background: var(--card);
    border: 1px solid var(--border);
}

body.dark .card * {
    color: var(--text);
}

/* ================= INPUTS ================= */
body.dark input,
body.dark textarea,
body.dark select {
    background: #0f172a;
    color: var(--text);
    border: 1px solid var(--border);
}

/* ================= MODALS ================= */
body.dark .modal-content {
    background: var(--card);
    color: var(--text);
}

/* ================= TABLES ================= */
body.dark table {
    background: var(--card);
}

body.dark th {
    background: rgba(99, 102, 241, 0.15);
    color: var(--text);
}

body.dark td {
    color: var(--text);
}