:root {
    --brand-navy: #1c2b3d;
    --brand-blue: #314860;
    --brand-cream: #f6f4ef;
    --brand-teal: #456d66;
    --brand-gold: #9b8965;
    --panel-shadow: 0 10px 24px rgba(28, 43, 61, 0.06);
    --line-soft: rgba(97, 112, 129, 0.18);
    --text-soft: #667487;
    --available-deep: #2f6f53;
    --available-soft: #5a8f74;
    --occupied-deep: #8a4f4c;
    --occupied-soft: #b0706d;
    --broken-deep: #586476;
    --broken-soft: #798497;
}

body {
    min-height: 100vh;
    font-family: "Plus Jakarta Sans", sans-serif;
    color: #243246;
    background: linear-gradient(180deg, #eff3f6 0%, #f6f7f5 100%);
}

.navbar-shell {
    background: #223548;
    box-shadow: 0 2px 10px rgba(22, 34, 49, 0.12);
}

.brand-logo {
    width: auto;
    height: 32px;
    object-fit: contain;
    filter: none;
}

.brand-copy {
    line-height: 1;
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff;
}

.clock-panel {
    min-width: 98px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.clock-value {
    padding: 0.2rem 0;
    font-size: 1rem;
    font-weight: 600;
    color: #ffffff;
    letter-spacing: 0.02em;
    font-variant-numeric: tabular-nums;
}

.hero-card {
    padding: 1.75rem;
    border-radius: 1rem;
    background: #ffffff;
    border: 1px solid var(--line-soft);
    box-shadow: var(--panel-shadow);
}

.page-title {
    font-size: 2.05rem;
    font-weight: 700;
    line-height: 1.18;
    color: #243247;
}

.page-subtitle {
    max-width: 680px;
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--text-soft);
}

.stats-card {
    padding: 1.15rem 1.25rem;
    border-radius: 0.9rem;
    background: #ffffff;
    border: 1px solid var(--line-soft);
    box-shadow: none;
}

.stats-label {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #6f7e90;
}

.stats-value {
    margin-top: 0.4rem;
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
    color: #243247;
}

.stats-value-available {
    color: #356a51;
}

.stats-value-occupied {
    color: #925552;
}

.stats-value-broken {
    color: #606b7d;
}

.locker-panel {
    border-radius: 1rem;
    background: #ffffff;
    box-shadow: var(--panel-shadow);
}

.legend-badge {
    padding: 0.55rem 0.9rem;
    font-size: 0.78rem;
    letter-spacing: 0.02em;
    border: 1px solid transparent;
}

.legend-badge-available {
    color: #3b654f;
    background: rgba(90, 143, 116, 0.14);
    border-color: rgba(90, 143, 116, 0.2);
}

.legend-badge-occupied {
    color: #84524f;
    background: rgba(176, 112, 109, 0.14);
    border-color: rgba(176, 112, 109, 0.2);
}

.legend-badge-broken {
    color: #5d6878;
    background: rgba(121, 132, 151, 0.14);
    border-color: rgba(121, 132, 151, 0.2);
}

.locker-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.locker-button {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: space-between;
    min-height: 9.5rem;
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 0.9rem;
    text-align: left;
    color: white;
    transition: transform 160ms ease, box-shadow 160ms ease, filter 160ms ease;
    box-shadow: 0 6px 16px rgba(34, 49, 71, 0.08);
}

button.locker-button:hover,
button.locker-button:focus-visible {
    transform: translateY(-1px);
    filter: brightness(1.02);
    outline: none;
}

.locker-button-available {
    background: linear-gradient(180deg, #3f7a5d 0%, #4d8668 100%);
}

.locker-button-occupied {
    background: linear-gradient(180deg, #8e5d5a 0%, #a56f6c 100%);
}

.locker-button-broken {
    cursor: not-allowed;
    background: linear-gradient(180deg, #687385 0%, #7a8697 100%);
}

.locker-number {
    font-size: 1.7rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.locker-meta,
.locker-helper {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
}

.locker-meta {
    margin-top: auto;
}

.locker-status-chip {
    color: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.locker-chip-available {
    background: rgba(30, 70, 52, 0.28);
}

.locker-chip-occupied {
    background: rgba(95, 50, 48, 0.26);
}

.locker-chip-broken {
    background: rgba(61, 71, 86, 0.28);
}

.captcha-chip {
    display: inline-flex;
    align-items: center;
    padding: 0.55rem 0.9rem;
    border-radius: 999px;
    background: rgba(99, 116, 138, 0.12);
    color: #324760;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.empty-state {
    padding: 2rem;
    border-radius: 0.9rem;
    background: linear-gradient(180deg, rgba(249, 250, 249, 0.96), rgba(235, 238, 239, 0.78));
}

.modal-content {
    border-radius: 0.9rem;
    background: #fbfbfa;
    border: 1px solid rgba(104, 122, 141, 0.12);
    box-shadow: 0 10px 24px rgba(28, 43, 61, 0.08);
}

.form-control,
.btn,
.alert {
    border-radius: 0.7rem;
}

.form-control {
    border-color: rgba(108, 126, 145, 0.24);
}

.form-control:focus {
    border-color: rgba(79, 109, 105, 0.5);
    box-shadow: 0 0 0 0.2rem rgba(79, 109, 105, 0.12);
}

.btn-action-primary {
    color: #fff;
    background: #3d755b;
    border-color: #3d755b;
}

.btn-action-primary:hover,
.btn-action-primary:focus,
.btn-action-primary:active {
    color: #fff;
    background: #34654d;
    border-color: #34654d;
}

.btn-action-danger {
    color: #fff;
    background: #935754;
    border-color: #935754;
}

.btn-action-danger:hover,
.btn-action-danger:focus,
.btn-action-danger:active {
    color: #fff;
    background: #814b48;
    border-color: #814b48;
}

input[name="nim"] {
    text-transform: uppercase;
}

@media (min-width: 768px) {
    .hero-card {
        padding: 2rem;
    }

    .locker-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (min-width: 1200px) {
    .locker-grid {
        grid-template-columns: repeat(8, minmax(0, 1fr));
    }
}