*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

img { max-width: 100%; height: auto; }

/* ========== NAVBAR ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: rgba(255,255,255,0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-4);
    z-index: 200;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-lg);
    color: var(--color-text);
}

.navbar-brand img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    object-fit: cover;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: none;
    background: none;
    cursor: pointer;
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 1.25rem;
}

.hamburger:hover {
    background: var(--color-primary-light);
}

/* ========== SIDEBAR ========== */
.sidebar {
    position: fixed;
    left: 0;
    top: var(--navbar-height);
    width: var(--sidebar-width);
    height: calc(100vh - var(--navbar-height));
    background: var(--color-surface);
    border-right: 1px solid var(--color-border-light);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    z-index: 150;
    padding: var(--space-4) 0;
}

.sidebar.open { transform: translateX(0); }

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.3);
    z-index: 140;
}

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

.sidebar-section {
    padding: var(--space-2) var(--space-4);
    margin-bottom: var(--space-2);
}

.sidebar-section-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-2) var(--space-4);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    margin: 0 var(--space-2);
}

.sidebar-link:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.sidebar-link.active {
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

.sidebar-link svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* ========== LAYOUT ========== */
.app-container {
    display: flex;
    min-height: 100vh;
    padding-top: var(--navbar-height);
}

.main-content {
    flex: 1;
    padding: var(--space-4);
    width: 100%;
    max-width: var(--content-max);
    margin: 0 auto;
}

/* ========== PAGE HEADER ========== */
.page-header {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}

.page-header h1 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
}

.page-header .subtitle {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.page-header-actions {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

/* ========== CARDS ========== */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    padding: var(--space-5);
    margin-bottom: var(--space-4);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--color-border-light);
}

.card-header h2, .card-header h3 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

/* ========== FORMS ========== */
.form-group {
    margin-bottom: var(--space-4);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    margin-bottom: var(--space-1);
}

.form-group .required::after {
    content: ' *';
    color: var(--color-danger);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
input[type="tel"],
input[type="url"],
input[type="search"],
select,
textarea {
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-appearance: none;
    appearance: none;
    color: var(--color-text);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15);
}

input:disabled, select:disabled, textarea:disabled {
    background: var(--color-bg);
    color: var(--color-text-tertiary);
    cursor: not-allowed;
}

textarea {
    resize: vertical;
    min-height: 80px;
}

select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236e6e73' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    padding-right: var(--space-8);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

.form-hint {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    margin-top: var(--space-1);
}

.form-error {
    font-size: var(--font-size-xs);
    color: var(--color-danger);
    margin-top: var(--space-1);
}

/* ========== BUTTONS ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family);
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    text-decoration: none;
    min-height: 44px;
    min-width: 44px;
    line-height: 1;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.btn-primary:hover { background: var(--color-primary-hover); color: #fff; }

.btn-secondary {
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}
.btn-secondary:hover { background: var(--color-border-light); color: var(--color-text); }

.btn-danger {
    background: var(--color-danger);
    color: #fff;
}
.btn-danger:hover { background: #e0342b; color: #fff; }

.btn-success {
    background: var(--color-success);
    color: #fff;
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-xs);
    min-height: 36px;
}

.btn-icon {
    padding: var(--space-2);
    border-radius: var(--radius-sm);
    min-width: 36px;
    min-height: 36px;
}

.btn-block {
    width: 100%;
}

/* ========== TABLES ========== */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

th {
    text-align: left;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: var(--space-3) var(--space-4);
    border-bottom: 2px solid var(--color-border-light);
    white-space: nowrap;
}

td {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: middle;
}

tr:hover td { background: var(--color-surface-hover); }

/* ========== BADGES ========== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    white-space: nowrap;
}

.badge-success { background: var(--color-success-light); color: var(--color-success); }
.badge-warning { background: var(--color-warning-light); color: var(--color-warning); }
.badge-danger  { background: var(--color-danger-light);  color: var(--color-danger); }
.badge-info    { background: var(--color-info-light);    color: #0a84ff; }
.badge-neutral { background: var(--color-bg); color: var(--color-text-secondary); }

/* ========== ALERTS / FLASH ========== */
.alert {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
}

.alert-success { background: var(--color-success-light); color: #1a7a34; }
.alert-error   { background: var(--color-danger-light);  color: var(--color-danger); }
.alert-warning { background: var(--color-warning-light); color: #996600; }
.alert-info    { background: var(--color-info-light);    color: #0a84ff; }

.alert-close {
    background: none;
    border: none;
    font-size: var(--font-size-lg);
    cursor: pointer;
    color: inherit;
    opacity: 0.6;
    padding: 0;
    line-height: 1;
}

.alert-close:hover { opacity: 1; }

/* ========== STAT CARDS ========== */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.stat-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    padding: var(--space-4);
}

.stat-card .stat-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    line-height: 1.1;
}

.stat-card .stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    margin-top: var(--space-1);
}

/* ========== ERROR PAGES ========== */
.error-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--space-4);
}

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

.error-content h1 {
    font-size: 5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-2);
}

.error-content p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

/* ========== LOGIN PAGE ========== */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--space-4);
    background: var(--color-bg);
}

.auth-card {
    width: 100%;
    max-width: 400px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-8);
}

.auth-card .auth-logo {
    text-align: center;
    margin-bottom: var(--space-6);
}

.auth-card .auth-logo img {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    object-fit: cover;
}

.auth-card .auth-logo h1 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-top: var(--space-3);
}

.auth-card .auth-logo p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

/* ========== PUBLIC PAGE ========== */
.public-hero {
    text-align: center;
    padding: var(--space-16) var(--space-4);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.public-hero h1 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-2);
}

.public-hero p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.public-hero .club-logo {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-xl);
    object-fit: cover;
    margin-bottom: var(--space-4);
    border: 4px solid rgba(255,255,255,0.3);
}

.public-section {
    padding: var(--space-12) var(--space-4);
    max-width: var(--content-max);
    margin: 0 auto;
}

.public-section h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-6);
    text-align: center;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
}

.gallery-grid img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.sponsor-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-6);
    justify-content: center;
    align-items: center;
}

.sponsor-grid img {
    height: 60px;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all var(--transition-base);
}

.sponsor-grid img:hover {
    filter: none;
    opacity: 1;
}

/* ========== CHECKBOX / RADIO ========== */
.checkbox-group, .radio-group {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.checkbox-group input[type="checkbox"],
.radio-group input[type="radio"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    flex-shrink: 0;
    accent-color: var(--color-primary);
}

/* ========== EMPTY STATE ========== */
.empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-4);
    color: var(--color-text-tertiary);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-4);
    opacity: 0.4;
}

.empty-state p {
    margin-bottom: var(--space-4);
}

/* ========== AVATAR ========== */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.avatar-lg {
    width: 80px;
    height: 80px;
    font-size: var(--font-size-xl);
}

/* ========== UTILITY ========== */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-muted  { color: var(--color-text-secondary); }
.text-sm     { font-size: var(--font-size-sm); }
.text-xs     { font-size: var(--font-size-xs); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.d-flex { display: flex; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.hidden { display: none !important; }

/* ========== TABLET ========== */
@media (min-width: 768px) {
    .main-content {
        padding: var(--space-6) var(--space-8);
    }

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

    .form-grid {
        grid-template-columns: 1fr 1fr;
    }

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

    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .page-header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }

    .public-hero h1 {
        font-size: var(--font-size-3xl);
    }
}

/* ========== DESKTOP ========== */
@media (min-width: 1024px) {
    .sidebar {
        transform: translateX(0);
    }

    .sidebar-overlay { display: none !important; }

    .main-content {
        margin-left: var(--sidebar-width);
    }

    .hamburger { display: none; }

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

    .form-grid-3 {
        grid-template-columns: 1fr 1fr 1fr;
    }
}

/* ========== PRINT ========== */
@media print {
    .navbar, .sidebar, .sidebar-overlay, .hamburger, .btn { display: none !important; }
    .main-content { margin-left: 0; padding: 0; }
    .card { box-shadow: none; border: 1px solid #ddd; }
}