:root {
    --bg-primary: #0a0a0a;
    --bg-card: #151515;
    --bg-navbar: #111111;
    --bg-table-stripe: #1a1a1a;
    --text-primary: #f0f0f0;
    --text-muted: #888888;
    --accent: #e52723;
    --accent-hover: #c41f1f;
    --border-color: #2a2a2a;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('/static/images/background.jpg');
    background-size: cover;
    background-position: center top;
    z-index: -1;
}

.navbar {
    background-color: var(--bg-navbar) !important;
    border-bottom: 1px solid var(--border-color);
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.navbar-brand img {
    height: 36px;
    width: auto;
}

.hero-banner {
    max-width: 550px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    display: block;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.card-title {
    color: var(--text-primary);
}

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

.btn-primary {
    background-color: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
    font-weight: 600;
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #ffffff;
}

.btn-secondary {
    background-color: #2a2a2a;
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: #333333;
    border-color: #444444;
    color: var(--text-primary);
}

.table {
    color: var(--text-primary);
    --bs-table-color: var(--text-primary);
    --bs-table-bg: transparent;
    --bs-table-striped-color: var(--text-primary);
    --bs-table-striped-bg: var(--bg-table-stripe);
    --bs-table-hover-color: var(--text-primary);
    --bs-table-hover-bg: #222222;
    border-color: var(--border-color);
}

.table thead th {
    border-bottom-color: var(--border-color);
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.table td {
    border-color: var(--border-color);
}

.alert-danger {
    background-color: #2d1117;
    border-color: #6e2a2a;
    color: #ff8888;
}

.alert-info {
    background-color: #0d1f2d;
    border-color: #1a4060;
    color: #88ccff;
}

.alert-success {
    background-color: #0d2d1f;
    border-color: #1a6040;
    color: #88ffaa;
}

.alert-info a {
    color: var(--accent);
}

.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.modal-header {
    border-bottom-color: var(--border-color);
}

.modal-footer {
    border-top-color: var(--border-color);
}

.border-danger {
    border-color: #6e2a2a !important;
}

.form-control {
    background-color: #1a1a1a;
    border-color: var(--border-color);
    color: var(--text-primary);
}

.form-control:focus {
    background-color: #1a1a1a;
    border-color: var(--accent);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(229, 39, 35, 0.25);
}

a {
    color: var(--accent);
}

a:hover {
    color: var(--accent-hover);
}

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

footer hr {
    border-color: var(--border-color);
}

.sponsor-carousel {
    overflow: hidden;
}

.sponsor-track {
    display: flex;
    justify-content: center;
}

.sponsor-slide {
    flex: 0 0 20%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 1rem;
    box-sizing: border-box;
}

.sponsor-logo {
    max-height: 100px;
    max-width: 100%;
    object-fit: contain;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.sponsor-logo:hover {
    opacity: 1;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
}

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

.nav-link {
    transition: color 0.15s ease;
}

.nav-link:hover {
    color: var(--accent) !important;
}

.navbar .nav-link {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.navbar .dropdown:hover > .dropdown-menu {
    display: block;
    margin-top: 0;
}

.dropdown-menu {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
}

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

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: #2a2a2a;
    color: var(--text-primary);
}

.dropdown-divider {
    border-color: var(--border-color);
}

/* Tabs + panel container */
.nav-tabs {
    border-bottom: none;
}

.nav-tabs .nav-link {
    color: var(--text-muted);
    border: 1px solid transparent;
    border-top-left-radius: 0.375rem;
    border-top-right-radius: 0.375rem;
    transition: color 0.15s ease, background-color 0.15s ease;
}

.nav-tabs .nav-link:hover {
    color: var(--text-primary);
    border-color: var(--border-color) var(--border-color) transparent;
    background-color: var(--bg-card);
}

.nav-tabs .nav-link.active {
    color: var(--accent);
    background-color: var(--bg-card);
    border-color: var(--border-color) var(--border-color) var(--bg-card);
}

.tab-panel-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 0 0.375rem 0.375rem 0.375rem;
    padding: 1.25rem;
}

/* Accordion */
.accordion-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.accordion-button {
    background-color: var(--bg-card);
    color: var(--text-primary);
    box-shadow: none;
    display: flex;
    align-items: center;
}

.accordion-button:not(.collapsed) {
    background-color: #1a1a1a;
    color: var(--accent);
    box-shadow: none;
}

.accordion-button::after {
    filter: invert(1);
}

.accordion-button:focus {
    box-shadow: none;
    border-color: var(--border-color);
}

.accordion-body {
    background-color: var(--bg-card);
}

.accordion .list-group-item {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-primary);
}

.team-header {
    flex: 1;
    min-width: 0;
}

/* Team fill progress bar */
.team-fill-bar {
    position: relative;
    width: 70px;
    height: 22px;
    background-color: #2a2a2a;
    border-radius: 0.25rem;
    overflow: hidden;
    margin-left: auto;
    margin-right: 0.75rem;
    flex-shrink: 0;
}

.team-fill-bar-inner {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: var(--fill);
    background-color: var(--accent);
    border-radius: 0.25rem 0 0 0.25rem;
    transition: width 0.3s ease;
}

.team-fill-bar-text {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    font-size: 0.75rem;
    font-weight: 600;
    color: #ffffff;
    z-index: 1;
}

/* My Team card */
.my-team-card {
    border-color: var(--accent);
    border-width: 2px;
}

.my-team-card .card-title {
    font-size: 1.25rem;
    font-weight: 700;
}

.my-team-card .list-group-item {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Extra-small button variant */
.btn-xs {
    padding: 0.15rem 0.45rem;
    font-size: 0.75rem;
    line-height: 1.4;
    border-radius: 0.2rem;
}

.btn-outline-success {
    color: #4caf50;
    border-color: #4caf50;
}

.btn-outline-success:hover {
    background-color: #4caf50;
    border-color: #4caf50;
    color: #ffffff;
}

/* Participant badges */
.badge-captain {
    background-color: var(--accent);
    color: #ffffff;
    font-size: 0.75rem;
    padding: 0.3em 0.6em;
    border-radius: 0.25rem;
}

/* Countdown */
.countdown {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.countdown-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    min-width: 3rem;
    text-align: center;
}

.countdown-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 0.25rem;
}

/* Outline variant for dark theme */
.btn-outline-primary {
    color: var(--accent);
    border-color: var(--accent);
}

.btn-outline-primary:hover {
    background-color: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
}

/* Success text for open registration */
.text-success {
    color: #4caf50 !important;
}

/* Admin page */
.admin-user-row {
    cursor: pointer;
}

.status-icon {
    font-size: 18px;
    vertical-align: middle;
}

.status-paid {
    color: #4caf50;
}

.status-unpaid {
    color: #e52723;
}

.status-admin {
    color: #ffd700;
}

.form-select {
    background-color: #1a1a1a;
    border-color: var(--border-color);
    color: var(--text-primary);
}

.form-select:focus {
    background-color: #1a1a1a;
    border-color: var(--accent);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(229, 39, 35, 0.25);
}

.btn-primary:disabled,
.btn-primary.disabled {
    background-color: #2a2a2a;
    border-color: var(--border-color);
    color: var(--text-muted);
    opacity: 1;
}

.btn-outline-warning {
    color: #ffa726;
    border-color: #ffa726;
}

.btn-outline-warning:hover {
    background-color: #ffa726;
    border-color: #ffa726;
    color: #000000;
}

@media (max-width: 576px) {
    .sponsor-slide {
        flex: 0 0 33.33%;
    }

    .hero-banner {
        max-width: 300px;
    }

    .navbar-brand img {
        height: 24px;
    }

    .btn-lg {
        width: 100%;
    }

    .card-body {
        padding: 1rem;
    }

    .countdown {
        gap: 0.75rem;
    }

    .countdown-value {
        font-size: 1.75rem;
    }

    .nav-tabs .nav-link {
        font-size: 0.85rem;
        padding: 0.4rem 0.6rem;
    }
}