/* CSS Custom Properties for Dark Theme */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #f1f5f9;
    --accent-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --background-color: #0f172a;
    --surface-color: #1e293b;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-medium: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-heavy: 0 10px 25px rgba(0, 0, 0, 0.3), 0 6px 10px rgba(0, 0, 0, 0.15);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

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

/* Header Styles */
header {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-heavy);
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-1);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    text-align: center;
}

nav {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    background: rgba(51, 65, 85, 0.8);
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.nav-btn:hover::before {
    left: 100%;
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    color: var(--text-color);
}

.nav-btn.active {
    background: var(--gradient-1);
    color: white;
    box-shadow: var(--shadow-medium);
}

/* Section Styles */
.dashboard-section {
    display: none;
    animation: fadeInUp 0.5s ease-out;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-color);
}

.header-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.action-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.action-btn:not(.secondary):not(.danger) {
    background: var(--gradient-1);
    color: white;
}

.action-btn.secondary {
    background: rgba(51, 65, 85, 0.8);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.action-btn.danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.action-btn:active {
    transform: translateY(0);
}

/* Grid and List Containers */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
}

.list-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Card Styles */
.card {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 25px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover::before {
    opacity: 1;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
    border-color: var(--primary-color);
}

/* Team Card Styles */
.team-card {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.team-card h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 10px;
}

.team-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.stat-item {
    background: rgba(51, 65, 85, 0.5);
    padding: 15px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-item:hover {
    background: rgba(51, 65, 85, 0.8);
    transform: scale(1.05);
}

.stat-item h4 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 5px;
}

.stat-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Match Card Styles */
.match-card {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.match-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.match-date {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.match-status {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.match-status.pending {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.match-status.completed {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.match-status.cancelled {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.match-teams {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.team {
    flex: 1;
    text-align: center;
    padding: 20px;
    background: rgba(51, 65, 85, 0.5);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.team:hover {
    background: rgba(51, 65, 85, 0.8);
    transform: scale(1.02);
}

.team.winner {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(5, 150, 105, 0.2));
    border: 2px solid var(--accent-color);
}

.team h4 {
    color: var(--text-color);
    margin-bottom: 8px;
}

.vs {
    color: var(--text-muted);
    font-weight: 700;
    font-size: 1.2rem;
}

.score {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-top: 10px;
}

.match-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.match-actions .action-btn {
    padding: 8px 16px;
    font-size: 0.9rem;
}

/* Statistics Styles */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 25px;
}

.stats-card {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow-medium);
}

.stats-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 20px;
    text-align: center;
}

.ranking-item {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    gap: 15px;
    align-items: center;
    padding: 15px;
    background: rgba(51, 65, 85, 0.3);
    border-radius: 12px;
    margin-bottom: 10px;
    transition: all 0.3s ease;
}

.ranking-item:hover {
    background: rgba(51, 65, 85, 0.6);
    transform: translateX(5px);
}

.rank {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.1rem;
    min-width: 30px;
}

.team-name {
    font-weight: 600;
    color: var(--text-color);
}

.points {
    color: var(--accent-color);
    font-weight: 700;
    font-size: 1.1rem;
}

.win-rate {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    position: relative;
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    margin: 5% auto;
    padding: 40px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    border-radius: 20px;
    box-shadow: var(--shadow-heavy);
    animation: slideIn 0.3s ease-out;
    overflow-y: auto;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close-btn {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.3s ease;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(51, 65, 85, 0.5);
}

.close-btn:hover {
    color: var(--text-color);
    background: rgba(51, 65, 85, 0.8);
    transform: rotate(90deg);
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

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

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 16px;
    background: rgba(51, 65, 85, 0.5);
    color: var(--text-color);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Validation styling */
.form-group input:invalid {
    border-color: #ef4444;
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2);
}

.form-group input:valid {
    border-color: #10b981;
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

.validation-hint {
    font-size: 0.8em;
    color: var(--text-muted);
    margin-top: 5px;
    padding: 8px 12px;
    background: rgba(51, 65, 85, 0.5);
    border-radius: 6px;
    border-left: 3px solid var(--primary-color);
}

.validation-hint.error {
    border-left-color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

.validation-hint.success {
    border-left-color: #10b981;
    background: rgba(16, 185, 129, 0.1);
}

/* Notification Styles */
.notification {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 20px 30px;
    border-radius: 16px;
    color: white;
    font-weight: 500;
    z-index: 1000;
    animation: slideInRight 0.3s ease-out;
    box-shadow: var(--shadow-heavy);
    backdrop-filter: blur(10px);
}

.notification.success {
    background: linear-gradient(135deg, #10b981, #059669);
}

.notification.error {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Activity Styles */
.activity-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 15px;
    background: rgba(51, 65, 85, 0.3);
    border-radius: 12px;
    margin-bottom: 10px;
    transition: all 0.3s ease;
}

.activity-item:hover {
    background: rgba(51, 65, 85, 0.6);
    transform: translateX(5px);
}

.activity-time {
    font-size: 0.8em;
    color: var(--text-muted);
}

.activity-action {
    color: var(--text-color);
}

/* Form Indicators */
.form-indicators {
    display: flex;
    gap: 5px;
}

.form-indicator {
    width: 25px;
    height: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    font-weight: bold;
    font-size: 0.8em;
}

.form-indicator.win {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.form-indicator.loss {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.form-indicator.draw {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: black;
}

/* Team Details Modal */
.team-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.recent-matches {
    background: rgba(51, 65, 85, 0.5);
    padding: 20px;
    border-radius: 12px;
    max-height: 300px;
    overflow-y: auto;
}

/* Custom scrollbar for recent matches */
.recent-matches::-webkit-scrollbar {
    width: 8px;
}

.recent-matches::-webkit-scrollbar-track {
    background: rgba(51, 65, 85, 0.3);
    border-radius: 4px;
}

.recent-matches::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

.recent-matches::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

.recent-matches h4 {
    margin: 0 0 15px 0;
    color: var(--text-color);
}

.match-item {
    display: grid;
    grid-template-columns: auto auto 1fr;
    gap: 15px;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.match-item:last-child {
    border-bottom: none;
}

.match-result {
    padding: 4px 8px;
    border-radius: 8px;
    font-size: 0.8em;
    text-transform: uppercase;
    font-weight: 500;
}

.match-result.win {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.match-result.loss {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.match-result.draw {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: black;
}

/* Team Members */
.team-members {
    margin: 10px 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.team-members .member {
    background: rgba(51, 65, 85, 0.8);
    color: var(--text-color);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.9em;
    transition: all 0.3s ease;
}

.team-members .member:hover {
    background: rgba(51, 65, 85, 1);
    transform: scale(1.05);
}

/* Match Round Modal */
.match-status {
    display: flex;
    justify-content: space-between;
    margin: 20px 0;
    padding: 20px;
    background: rgba(51, 65, 85, 0.5);
    border-radius: 12px;
}

.team-score {
    text-align: center;
    flex: 1;
}

.team-score h3 {
    margin: 0 0 10px 0;
    color: var(--primary-color);
}

.team-score p {
    margin: 0;
    font-size: 1.2em;
    font-weight: bold;
    color: var(--text-color);
}

.round-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0;
}

.team-inputs {
    background: rgba(51, 65, 85, 0.5);
    padding: 20px;
    border-radius: 12px;
}

.team-inputs h4 {
    margin: 0 0 15px 0;
    color: var(--primary-color);
}

.round-history {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.round-history h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.round-item {
    background: rgba(51, 65, 85, 0.5);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 15px;
}

.round-item h4 {
    margin: 0 0 15px 0;
    color: var(--text-color);
}

.round-scores {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.team-round {
    font-size: 0.9em;
    color: var(--text-muted);
}

/* Pending Matches in Modal */
.pending-matches {
    margin-bottom: 20px;
    padding: 20px;
    background: rgba(51, 65, 85, 0.5);
    border-radius: 12px;
}

.pending-matches h3 {
    color: var(--text-color);
    margin-bottom: 15px;
    font-size: 1.1em;
}

.pending-matches-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.pending-match-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: rgba(30, 41, 59, 0.8);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.pending-match-item:hover {
    background: rgba(30, 41, 59, 1);
    transform: translateX(5px);
}

.pending-match-actions {
    display: flex;
    gap: 8px;
}

.pending-match-actions .action-btn {
    padding: 6px 12px;
    font-size: 0.9em;
}

/* Hover Effects */
.card, .action-btn, .nav-btn {
    position: relative;
    overflow: hidden;
}

.card::after,
.action-btn::after,
.nav-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.6s ease;
}

.card:hover::after,
.action-btn:hover::after,
.nav-btn:hover::after {
    width: 300px;
    height: 300px;
}

/* Glassmorphism Effect */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Pulse Animation for Important Elements */
.pulse {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    header {
        padding: 20px;
    }

    header h1 {
        font-size: 2rem;
    }

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

    .header-buttons {
        justify-content: center;
    }

    .action-btn {
        width: 100%;
    }

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

    .stats-container {
        grid-template-columns: 1fr;
    }

    .match-teams {
        flex-direction: column;
        gap: 15px;
    }

    .match-actions {
        flex-direction: column;
    }

    .modal-content {
        margin: 10% auto;
        padding: 30px;
    }

    .team-stats {
        grid-template-columns: 1fr;
    }

    .round-inputs {
        grid-template-columns: 1fr;
    }

    .round-scores {
        grid-template-columns: 1fr;
    }

    .match-status {
        flex-direction: column;
        gap: 15px;
    }

    .team-score {
        padding: 10px;
        background: rgba(15, 23, 42, 0.8);
        border-radius: 8px;
    }

    .pending-match-item {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .pending-match-actions {
        flex-direction: column;
        width: 100%;
    }

    .pending-match-actions .action-btn {
        width: 100%;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

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

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

/* Status Colors */
.status-win {
    color: var(--accent-color);
}

.status-loss {
    color: var(--danger-color);
}

.status-draw {
    color: var(--warning-color);
}

/* Authentication Modal Styles */
.auth-modal .modal-content {
    max-width: 500px;
}

.auth-modal h2 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
}

.auth-modal p {
    line-height: 1.6;
    margin-bottom: 25px;
    text-align: center;
}

.auth-modal input[type="password"] {
    font-family: monospace;
    letter-spacing: 2px;
    text-align: center;
}

.auth-modal .form-group {
    margin-bottom: 25px;
}

.auth-modal .action-btn {
    width: 100%;
    margin-top: 10px;
    font-weight: 600;
}

/* Context-specific authentication styles */
.auth-modal[data-context="team"] h2 {
    color: var(--accent-color);
}

.auth-modal[data-context="match"] h2 {
    color: var(--primary-color);
}

.auth-modal[data-context="round"] h2 {
    color: var(--warning-color);
}

.auth-modal[data-context="cancel"] h2 {
    color: var(--danger-color);
}

.auth-modal[data-context="start"] h2 {
    color: var(--accent-color);
}