:root {
    /* Colores claros (tema por defecto) */
    --primary-color: #4a6fa5;
    --secondary-color: #6b7b8c;
    --accent-color: #ff7e5f;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --card-bg: #ffffff;
    --body-bg: #f0f2f5;
    --border-color: #dee2e6;
    --text-color: #212529;
    --text-secondary: #6c757d;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    /* Colores oscuros */
    --primary-color: #5a86c9;
    --secondary-color: #8a9aad;
    --accent-color: #ff9a7a;
    --light-color: #2d3748;
    --dark-color: #1a202c;
    --card-bg: #2d3748;
    --body-bg: #1a202c;
    --border-color: #4a5568;
    --text-color: #e2e8f0;
    --text-secondary: #a0aec0;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.35);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--body-bg);
    color: var(--text-color);
    line-height: 1.6;
    transition: var(--transition);
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.app-title {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.header-controls {
    display: flex;
    gap: 15px;
}

.icon-button {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-color);
    font-size: 1.2rem;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.icon-button:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

/* Layout principal */
.main-content {
    display: flex;
    gap: 30px;
    flex: 1;
    margin-bottom: 30px;
}

.sidebar {
    flex: 0 0 280px;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.content-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

/* Tarjetas */
.date-display, .stats-card, .quick-actions, .calendar-integration {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.date-display:hover, .stats-card:hover, .quick-actions:hover, .calendar-integration:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.date-display h3, .stats-card h3, .quick-actions h3, .calendar-integration h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    color: var(--primary-color);
    font-size: 1.2rem;
}

#current-date {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.time-display {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
    text-align: center;
    padding: 10px;
    background: rgba(74, 111, 165, 0.1);
    border-radius: 10px;
}

.stats {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.stat-label {
    color: var(--text-secondary);
}

.stat-value {
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--primary-color);
}

/* Botones */
.action-btn {
    width: 100%;
    padding: 12px 15px;
    margin-bottom: 10px;
    border: none;
    border-radius: 10px;
    background: var(--light-color);
    color: var(--text-color);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.action-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

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

.action-btn.primary:hover {
    background: var(--accent-color);
}

.integrations {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.integration-btn {
    padding: 12px 15px;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: var(--transition);
}

.integration-btn.google-cal {
    background: #4285f4;
    color: white;
}

.integration-btn.outlook {
    background: #0072c6;
    color: white;
}

.integration-btn:hover {
    opacity: 0.9;
    transform: translateY(-3px);
}

/* Controles de vista */
.view-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
    padding: 15px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.view-tabs {
    display: flex;
    gap: 5px;
    background: var(--light-color);
    padding: 5px;
    border-radius: 10px;
}

.view-tab {
    padding: 8px 20px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
}

.view-tab.active {
    background: var(--primary-color);
    color: white;
}

.date-navigation {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-btn {
    background: var(--light-color);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-color);
    transition: var(--transition);
}

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

#current-view-date {
    font-weight: 600;
    min-width: 150px;
    text-align: center;
}

/* Contenedor de reuniones */
.meetings-container {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
    flex: 1;
}

.day-view, .week-view, .month-view {
    height: 100%;
}

.hidden {
    display: none;
}

.time-slot {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
}

.time-label {
    font-weight: 600;
    min-width: 80px;
    color: var(--primary-color);
}

.meeting-item {
    background: var(--primary-color);
    color: white;
    padding: 10px 15px;
    border-radius: 8px;
    margin-left: 20px;
    flex: 1;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
}

.meeting-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.meeting-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 5px;
    background: rgba(255, 255, 255, 0.5);
}

/* Reuniones próximas */
.upcoming-meetings {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
}

.meetings-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 15px;
}

.meeting-card {
    background: var(--light-color);
    border-radius: 10px;
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: var(--transition);
    border-left: 5px solid var(--primary-color);
}

.meeting-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.meeting-time {
    font-weight: 700;
    color: var(--primary-color);
    min-width: 80px;
}

.meeting-info {
    flex: 1;
}

.meeting-title {
    font-weight: 600;
    margin-bottom: 5px;
}

.meeting-participants {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: translateY(-30px);
    transition: transform 0.3s ease;
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

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

.close-modal, .close-suggestions {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
}

.close-modal:hover, .close-suggestions:hover {
    color: var(--danger-color);
}

#meeting-form {
    padding: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color);
}

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--body-bg);
    color: var(--text-color);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.2);
}

.form-row {
    display: flex;
    gap: 15px;
}

.form-row .form-group {
    flex: 1;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    margin-top: 30px;
}

.btn {
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

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

.btn.secondary {
    background: var(--light-color);
    color: var(--text-color);
}

.btn.secondary:hover {
    background: var(--border-color);
}

/* Sugerencias de horarios */
.suggestions-container {
    padding: 20px;
}

.time-suggestion {
    background: var(--light-color);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
    cursor: pointer;
}

.time-suggestion:hover {
    background: var(--primary-color);
    color: white;
}

.suggestion-time {
    font-weight: 700;
    font-size: 1.1rem;
}

.suggestion-duration {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.time-suggestion:hover .suggestion-duration {
    color: rgba(255, 255, 255, 0.8);
}

/* Footer */
.app-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.footer-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.offline-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 10px;
    border-radius: 20px;
    background: var(--success-color);
    color: white;
    font-size: 0.9rem;
}

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

.storage-info {
    text-align: right;
}

.storage-bar {
    width: 200px;
    height: 10px;
    background: var(--light-color);
    border-radius: 5px;
    overflow: hidden;
    margin-top: 5px;
}

.storage-fill {
    height: 100%;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    border-radius: 5px;
    width: 0%;
    transition: width 0.5s ease;
}

/* Responsive */
@media (max-width: 1024px) {
    .main-content {
        flex-direction: column;
    }
    
    .sidebar {
        flex: none;
        width: 100%;
    }
    
    .form-row {
        flex-direction: column;
        gap: 0;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .app-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .view-controls {
        flex-direction: column;
        gap: 15px;
    }
    
    .app-footer {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .storage-info {
        text-align: center;
    }
}