/* ============================================
   SORTEO CADENA - Estilos Premium
   Paleta: Azul #1d4ed8, Negro #0f172a,
           Gris #f1f5f9, Blanco #ffffff
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

:root {
    --blue: #1d4ed8;
    --blue-light: #3b82f6;
    --blue-dark: #1e3a8a;
    --dark: #0f172a;
    --dark-soft: #1e293b;
    --gray-light: #f1f5f9;
    --gray: #94a3b8;
    --gray-mid: #cbd5e1;
    --white: #ffffff;
    --success: #16a34a;
    --warning: #f59e0b;
    --danger: #dc2626;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
    --radius: 12px;
    --radius-sm: 8px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1d4ed8 100%);
    min-height: 100vh;
    color: var(--dark);
    line-height: 1.6;
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
    max-width: 520px;
    margin: 0 auto;
    padding: 24px 16px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.container--wide {
    max-width: 900px;
}

/* ============================================
   CARD
   ============================================ */
.card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-xl);
    padding: 40px 32px;
    animation: fadeInUp 0.5s ease-out;
}

.card--demo {
    border: 2px solid var(--warning);
    position: relative;
}

.card--demo::before {
    content: '🧪 MODO DEMO';
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--warning);
    color: var(--white);
    font-size: 12px;
    font-weight: 700;
    padding: 4px 16px;
    border-radius: 20px;
    letter-spacing: 1px;
}

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

/* ============================================
   TYPOGRAPHY
   ============================================ */
.title {
    font-size: 28px;
    font-weight: 800;
    color: var(--dark);
    text-align: center;
    margin-bottom: 4px;
    letter-spacing: -0.5px;
}

.subtitle {
    font-size: 14px;
    color: var(--gray);
    text-align: center;
    margin-bottom: 32px;
    font-weight: 400;
}

/* ============================================
   STATUS BADGE
   ============================================ */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--gray-light);
    border-radius: 50px;
    padding: 10px 20px;
    margin: 0 auto 28px;
    font-size: 14px;
    font-weight: 500;
    color: var(--dark-soft);
}

.status-badge__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    animation: pulse 2s infinite;
}

.status-badge__dot--full {
    background: var(--danger);
    animation: none;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

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

/* ============================================
   FORM
   ============================================ */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--dark-soft);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--gray-mid);
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-family: inherit;
    color: var(--dark);
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--white);
}

.form-input:focus {
    outline: none;
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.15);
}

.form-input::placeholder {
    color: var(--gray);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 16px 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    text-align: center;
}

.btn--primary {
    background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(29, 78, 216, 0.4);
}

.btn--primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(29, 78, 216, 0.5);
}

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

.btn--primary:disabled {
    background: var(--gray-mid);
    color: var(--gray);
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
}

.btn--secondary {
    background: var(--gray-light);
    color: var(--dark-soft);
    box-shadow: var(--shadow-sm);
}

.btn--secondary:hover {
    background: #e2e8f0;
}

.btn--success {
    background: linear-gradient(135deg, var(--success) 0%, #15803d 100%);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(22, 163, 74, 0.4);
}

.btn--success:hover {
    transform: translateY(-1px);
}

.btn--danger {
    background: linear-gradient(135deg, var(--danger) 0%, #b91c1c 100%);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}

.btn--danger:hover {
    transform: translateY(-1px);
}

.btn--outline {
    background: transparent;
    border: 2px solid var(--blue);
    color: var(--blue);
}

.btn--outline:hover {
    background: var(--blue);
    color: var(--white);
}

.btn--sm {
    padding: 10px 18px;
    font-size: 14px;
    width: auto;
}

.btn-group {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.btn-group .btn {
    flex: 1;
}

/* ============================================
   ALERT / NOTICE
   ============================================ */
.alert {
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert--info {
    background: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

.alert--warning {
    background: #fffbeb;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert--danger {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert--success {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

/* ============================================
   RESULT NUMBER
   ============================================ */
.result-number {
    text-align: center;
    margin: 24px 0;
}

.result-number__circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%);
    box-shadow: 0 8px 30px rgba(29, 78, 216, 0.4);
    animation: scaleIn 0.5s ease-out;
}

.result-number__value {
    font-size: 56px;
    font-weight: 800;
    color: var(--white);
    line-height: 1;
}

.result-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark);
    text-align: center;
    margin-top: 16px;
}

.result-date {
    font-size: 13px;
    color: var(--gray);
    text-align: center;
    margin-top: 6px;
}

@keyframes scaleIn {
    from { transform: scale(0.5); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

/* ============================================
   MESSAGE SCREENS
   ============================================ */
.message-screen {
    text-align: center;
    padding: 20px 0;
}

.message-screen__icon {
    font-size: 56px;
    margin-bottom: 16px;
}

.message-screen__title {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.message-screen__text {
    font-size: 15px;
    color: var(--gray);
    max-width: 360px;
    margin: 0 auto;
}

/* ============================================
   ADMIN TABLE
   ============================================ */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 24px;
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--gray-light);
    border-radius: var(--radius-sm);
    padding: 16px;
    text-align: center;
}

.stat-card__number {
    font-size: 28px;
    font-weight: 800;
    color: var(--blue);
}

.stat-card__label {
    font-size: 12px;
    font-weight: 600;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-sm);
    border: 1px solid #e2e8f0;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.table th {
    background: var(--dark);
    color: var(--white);
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.table td {
    padding: 12px 16px;
    border-bottom: 1px solid #f1f5f9;
    color: var(--dark-soft);
}

.table tr:hover td {
    background: #f8fafc;
}

.table tr:last-child td {
    border-bottom: none;
}

.number-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--blue);
    color: var(--white);
    font-weight: 700;
    font-size: 14px;
}

/* ============================================
   SPINNER
   ============================================ */
.spinner {
    display: none;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

.btn--loading .spinner {
    display: inline-block;
}

.btn--loading .btn-text {
    display: none;
}

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

/* ============================================
   LOGO / BRANDING
   ============================================ */
.brand {
    text-align: center;
    margin-bottom: 12px;
}

.brand__icon {
    font-size: 40px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    text-align: center;
    padding: 20px 0;
    font-size: 12px;
    color: rgba(255,255,255,0.4);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 600px) {
    .card {
        padding: 28px 20px;
    }

    .title {
        font-size: 24px;
    }

    .result-number__circle {
        width: 120px;
        height: 120px;
    }

    .result-number__value {
        font-size: 48px;
    }

    .admin-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .btn-group {
        flex-direction: column;
    }

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

/* ============================================
   HIDDEN UTILITY
   ============================================ */
.hidden { display: none !important; }

/* Smooth transitions for screens */
.screen { transition: opacity 0.3s ease; }