:root {
    --primary: #2196F3;
    --primary-dark: #1976D2;
    --success: #4CAF50;
    --danger: #f44336;
    --warning: #ff9800;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #eeeeee;
    --gray-300: #e0e0e0;
    --gray-400: #bdbdbd;
    --gray-500: #9e9e9e;
    --gray-700: #424242;
    --gray-900: #212121;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-50);
    color: var(--gray-900);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Login Screen */
.login-screen {
  display: none;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.login-screen.active {
  display: flex;
}

.login-card {
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    width: 100%;
    max-width: 400px;
}

.login-card h1 {
    font-size: 28px;
    margin-bottom: 30px;
    text-align: center;
    color: var(--gray-900);
}

.form-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
	width: 100%;
}

.btn-primary {
    background: var(--primary);
    color: white;
    width: 100%;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-900);
}

.btn-secondary:hover {
    background: var(--gray-300);
}

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

.btn-danger:hover {
    background: #da190b;
}

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

.btn-success:hover {
    background: #45a049;
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 20px;
}

.alert-error {
    background: #ffebee;
    color: var(--danger);
    border: 1px solid #ef5350;
}

.alert-success {
    background: #e8f5e9;
    color: var(--success);
    border: 1px solid #4CAF50;
}

.alert-info {
    background: #e3f2fd;
    color: var(--primary);
    border: 1px solid var(--primary);
}

/* Dashboard */
.dashboard {
    display: none;
}

.dashboard.active {
    display: block;
}

.header {
    background: white;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.header h1 {
    font-size: 24px;
    color: var(--gray-900);
}

.user-info {
    display: flex;
    gap: 12px;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    background: var(--gray-200);
    color: var(--gray-900);
}

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

.navigation {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.nav-btn {
    padding: 8px 16px;
    background: var(--gray-200);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
    color: var(--gray-700);
}

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

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

.content-section {
    display: none;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.content-section.active {
    display: block;
}

.section-title {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--gray-900);
    border-bottom: 2px solid var(--gray-200);
    padding-bottom: 10px;
}

.section-margin-top {
    margin-top: 30px;
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
    margin-bottom: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

thead {
    background: var(--gray-100);
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--gray-300);
}

th {
    font-weight: 600;
    color: var(--gray-900);
}

tr:hover {
    background: var(--gray-50);
}

tr.highlight {
    background: #e3f2fd;
}

.action-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Forms */
.form-card {
    background: var(--gray-50);
    padding: 20px;
    border-radius: 4px;
    margin-bottom: 20px;
    border: 1px solid var(--gray-200);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 8px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--gray-900);
}

.modal-footer {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    justify-content: flex-end;
}

/* Loading */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--gray-500);
}

.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-300);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Results Table */
.results-filters {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    align-items: flex-end;
}

.results-filters select,
.results-filters input {
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
}

.score-input {
    width: 80px;
    padding: 8px;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    text-align: center;
}

.score-input:focus {
    border-color: var(--primary);
    outline: none;
}

.position {
    font-weight: 600;
    color: var(--primary);
    font-size: 18px;
}

.badge-runner {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    background: var(--gray-200);
}

.badge-runner.male {
    background: #e3f2fd;
    color: var(--primary);
}

.badge-runner.female {
    background: #fce4ec;
    color: #c2185b;
}

/* Helpers */
.hidden {
    display: none !important;
}

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

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.muted {
    color: var(--gray-500);
}

/* Mode toggle */
.mode-toggle {
    position: fixed;
    right: 16px;
    bottom: 16px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
    padding: 8px 12px;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
    z-index: 1100;
}

/* Credential Input Group */
.credential-input-group {
    display: flex;
    align-items: center;
    gap: 12px;
    background: white;
    padding: 12px;
    border-radius: 4px;
}

.credential-input-group input {
    flex: 1;
    border: none;
    padding: 0;
    font-size: 14px;
    font-weight: bold;
    text-align: left;
    background: transparent;
    outline: none;
}

.credential-input-group input::placeholder {
    color: var(--gray-400);
}

.copy-icon {
    font-size: 18px;
    color: var(--primary);
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.copy-icon:hover {
    color: var(--primary-dark);
    transform: scale(1.1);
}

/* Password Input Group */
.password-input-group {
    display: flex;
    align-items: center;
    gap: 12px;
    background: white;
    padding: 12px;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
}

.password-input-group input {
    flex: 1;
    border: none;
    padding: 0;
    font-size: 14px;
    background: transparent;
    outline: none;
}

.password-input-group .toggle-password {
    color: var(--gray-500);
    cursor: pointer;
    transition: color 0.2s;
}

.password-input-group .toggle-password:hover {
    color: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .header {
        flex-direction: column;
        align-items: flex-start;
    }

    .navigation {
        width: 100%;
    }

    .nav-btn {
        flex: 1;
    }

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

    .login-card {
        padding: 20px;
    }

    table {
        font-size: 12px;
    }

    th, td {
        padding: 8px;
    }

    .action-buttons {
        flex-direction: column;
    }
}