/* Mobile-first Padel Tournament Tracker */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #16a34a;
    --success-dark: #15803d;
    --danger: #dc2626;
    --danger-dark: #b91c1c;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
    --white: #ffffff;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --radius: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--gray-900);
    padding: 16px;
}

.container {
    max-width: 600px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 24px;
}

header h1 {
    color: var(--white);
    font-size: 1.75rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.section {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-lg);
}

.section h2 {
    font-size: 1.125rem;
    color: var(--gray-700);
    margin-bottom: 16px;
    font-weight: 600;
}

/* Form Elements */
input[type="text"],
input[type="number"] {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

input[type="text"]:focus,
input[type="number"]:focus {
    outline: none;
    border-color: var(--primary);
}

input[type="number"] {
    width: 70px;
    text-align: center;
    padding: 10px 8px;
    font-size: 1.25rem;
    font-weight: 600;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: none;
}

.btn:active {
    transform: scale(0.98);
}

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

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

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

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

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

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

.btn-small {
    padding: 8px 12px;
    font-size: 0.875rem;
}

.btn-large {
    width: 100%;
    padding: 16px;
    font-size: 1.125rem;
    margin-top: 16px;
}

/* Add Team Form */
.add-team-form {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.add-team-form input {
    flex: 1;
}

.add-team-form .btn {
    white-space: nowrap;
}

/* Teams List */
.teams-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.team-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--gray-100);
    border-radius: 8px;
}

.team-item span {
    font-weight: 500;
}

.team-item .btn-remove {
    background: transparent;
    color: var(--danger);
    padding: 8px;
    border-radius: 50%;
    width: 36px;
    height: 36px;
}

.team-item .btn-remove:hover {
    background: var(--gray-200);
}

/* Standings Table */
.table-wrapper {
    overflow-x: auto;
    margin: -4px;
    padding: 4px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th, td {
    padding: 10px 8px;
    text-align: center;
}

th {
    background: var(--gray-100);
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.75rem;
    text-transform: uppercase;
}

th:first-child, td:first-child {
    width: 30px;
}

th:nth-child(2), td:nth-child(2) {
    text-align: left;
}

tr:not(:last-child) td {
    border-bottom: 1px solid var(--gray-200);
}

tr.top-two {
    background: linear-gradient(90deg, #fef3c7 0%, #fef9c3 100%);
}

.positive {
    color: var(--success);
}

.negative {
    color: var(--danger);
}

/* Matches List */
.matches-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.match-card {
    background: var(--gray-100);
    border-radius: 10px;
    padding: 16px;
    transition: all 0.2s;
}

.match-card.completed {
    background: linear-gradient(135deg, #dcfce7 0%, #d1fae5 100%);
    border: 1px solid #86efac;
}

.match-teams {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 12px;
}

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

.match-team.winner {
    font-weight: 700;
}

.team-name {
    font-weight: 500;
    font-size: 0.95rem;
    word-break: break-word;
}

.match-vs {
    color: var(--gray-500);
    font-weight: 600;
    font-size: 0.75rem;
}

.match-score {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.score-input {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.score-label {
    font-size: 0.7rem;
    color: var(--gray-500);
    text-transform: uppercase;
}

.score-display {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    min-width: 40px;
    text-align: center;
}

.score-divider {
    font-size: 1.25rem;
    color: var(--gray-500);
    font-weight: 300;
}

.match-save {
    margin-top: 12px;
}

.match-save .btn {
    width: 100%;
}

/* Final Match */
.final-match {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border-radius: 12px;
    padding: 20px;
    border: 2px solid #f59e0b;
}

.final-match .match-teams {
    margin-bottom: 16px;
}

.final-match .team-name {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Winner Display */
.winner-display {
    text-align: center;
    padding: 20px 0;
}

.trophy {
    font-size: 4rem;
    margin-bottom: 16px;
    animation: bounce 1s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.winner-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-top: 8px;
}

/* Actions */
#actions-section {
    background: transparent;
    box-shadow: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

#actions-section .btn {
    margin-top: 0;
}

#actions-section .btn-danger {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.5);
}

#actions-section .btn-danger:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--white);
}

/* Responsive */
@media (min-width: 480px) {
    header h1 {
        font-size: 2rem;
    }

    .section {
        padding: 24px;
    }

    .match-team .team-name {
        font-size: 1rem;
    }
}

/* Loading State */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 24px;
    color: var(--gray-500);
}

/* Toast notifications */
.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-900);
    color: var(--white);
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.9rem;
    z-index: 1000;
    animation: fadeIn 0.3s;
}

.toast.error {
    background: var(--danger);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateX(-50%) translateY(10px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}