/* Reset y variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #10b981;
    --primary-dark: #059669;
    --success: #16a34a;
    --warning: #f59e0b;
    --danger: #dc2626;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --am-color: #fef3c7;
    --am-border: #f59e0b;
    --pm-color: #dbeafe;
    --pm-border: #3b82f6;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 6px rgba(0,0,0,0.1);
}

/* Modo oscuro automático (según preferencia del sistema) */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --gray-50: #1f2937;
        --gray-100: #111827;
        --gray-200: #374151;
        --gray-300: #4b5563;
        --gray-500: #9ca3af;
        --gray-700: #d1d5db;
        --gray-900: #f9fafb;
        --bg-primary: #111827;
        --bg-secondary: #1f2937;
        --text-primary: #f9fafb;
        --text-secondary: #9ca3af;
        --header-bg: #065f46;
        --am-color: #422006;
        --am-border: #f59e0b;
        --pm-color: #1e3a5f;
        --pm-border: #60a5fa;
        --shadow: 0 1px 3px rgba(0,0,0,0.3);
        --shadow-lg: 0 4px 6px rgba(0,0,0,0.3);
        --toast-bg: #f9fafb;
        --toast-color: #111827;
    }
}

/* Modo oscuro forzado */
[data-theme="dark"] {
    --gray-50: #1f2937;
    --gray-100: #111827;
    --gray-200: #374151;
    --gray-300: #4b5563;
    --gray-500: #9ca3af;
    --gray-700: #d1d5db;
    --gray-900: #f9fafb;
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --header-bg: #065f46;
    --am-color: #422006;
    --am-border: #f59e0b;
    --pm-color: #1e3a5f;
    --pm-border: #60a5fa;
    --shadow: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-lg: 0 4px 6px rgba(0,0,0,0.3);
    --toast-bg: #f9fafb;
    --toast-color: #111827;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-100);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    transition: background 0.3s, color 0.3s;
}

#app {
    max-width: 480px;
    margin: 0 auto;
    background: var(--bg-primary);
    min-height: 100vh;
    transition: background 0.3s;
}

/* Toggle de tema */
.theme-toggle {
    background: rgba(255,255,255,0.2);
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.2s;
}

.theme-toggle:hover {
    background: rgba(255,255,255,0.3);
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--header-bg, var(--primary));
    color: white;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header h1 {
    font-size: 1.25rem;
    font-weight: 600;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
}

.btn-icon {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 4px;
    opacity: 0.8;
}

.btn-icon:hover {
    opacity: 1;
}

/* Navegación del mes */
.month-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--gray-200);
}

.month-nav span {
    font-weight: 600;
    font-size: 1rem;
}

.btn-nav {
    background: var(--gray-100);
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    color: var(--gray-700);
}

.btn-nav:hover {
    background: var(--gray-200);
}

/* Filtros */
.filters {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    overflow-x: auto;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--gray-200);
}

.filter-btn {
    flex-shrink: 0;
    padding: 8px 16px;
    border: 1px solid var(--gray-300);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: 20px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

/* Calendario */
.calendar {
    padding: 8px;
}

.day-card {
    background: var(--bg-primary);
    border-radius: var(--radius);
    margin-bottom: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.day-header {
    padding: 12px 16px;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    font-weight: 600;
    display: flex;
    justify-content: space-between;
}

.day-header .date {
    color: var(--gray-900);
}

.day-header .weekday {
    color: var(--gray-500);
    font-weight: normal;
    font-size: 0.875rem;
}

.day-header.today {
    background: var(--primary);
    color: white;
}

.day-header.today .date {
    color: white;
}

.day-header.today .weekday {
    color: rgba(255,255,255,0.8);
}

.shifts {
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.shift-card {
    display: flex;
    align-items: center;
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.1s;
    border-left: 4px solid;
}

.shift-card:active {
    transform: scale(0.98);
}

.shift-card.am {
    background: var(--am-color);
    border-left-color: var(--am-border);
}

.shift-card.pm {
    background: var(--pm-color);
    border-left-color: var(--pm-border);
}

.shift-card.mine {
    box-shadow: 0 0 0 2px var(--primary);
}

.mine-badge {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 600;
    padding: 2px 6px;
    background: var(--primary);
    color: white;
    border-radius: 8px;
    margin-left: 6px;
    vertical-align: middle;
}

.shift-type {
    font-weight: 700;
    font-size: 0.875rem;
    width: 40px;
}

.shift-type.am {
    color: var(--am-border);
}

.shift-type.pm {
    color: var(--pm-border);
}

.shift-doctor {
    flex: 1;
    font-size: 0.9375rem;
}

.shift-status {
    font-size: 0.7rem;
    padding: 4px 8px;
    border-radius: 12px;
    background: var(--warning);
    color: white;
}

.shift-status.status-mine {
    background: var(--primary);
}

.shift-status.status-incoming {
    background: var(--success);
}

.shift-card.has-request .shift-status {
    display: block;
}

/* Solicitudes */
.requests-section {
    padding: 16px;
    background: var(--gray-50);
}

.requests-section h2 {
    font-size: 1rem;
    margin-bottom: 12px;
    color: var(--gray-700);
}

.requests-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.request-card {
    background: var(--bg-primary);
    padding: 16px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--warning);
}

.request-info {
    margin-bottom: 12px;
}

.request-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.request-info strong {
    color: var(--text-primary);
}

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

.btn {
    flex: 1;
    padding: 10px 16px;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn:active {
    opacity: 0.8;
}

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

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

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

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-700);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 200;
    align-items: flex-end;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-primary);
    width: 100%;
    max-width: 480px;
    border-radius: var(--radius) var(--radius) 0 0;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid var(--gray-200);
}

.modal-header h2 {
    font-size: 1.125rem;
}

.btn-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 4px;
}

.modal-body {
    padding: 16px;
}

.modal-body p {
    margin-bottom: 8px;
    font-size: 0.9375rem;
}

.modal-actions {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border-top: 1px solid var(--gray-200);
}

/* Lista de mis turnos para intercambio */
.my-shifts-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 12px;
}

.my-shift-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background: var(--gray-50);
    border-radius: 8px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
    color: var(--text-primary);
}

.my-shift-option:hover {
    border-color: var(--primary);
}

.my-shift-option .date {
    font-weight: 600;
}

.my-shift-option .type {
    font-size: 0.875rem;
    padding: 4px 12px;
    border-radius: 12px;
}

.my-shift-option .type.am {
    background: var(--am-color);
    color: var(--am-border);
}

.my-shift-option .type.pm {
    background: var(--pm-color);
    color: var(--pm-border);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--toast-bg, #1f2937);
    color: var(--toast-color, #ffffff);
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.875rem;
    z-index: 300;
    transition: transform 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

/* Calendario mensual compacto */
.monthly-calendar {
    padding: 12px;
}

.monthly-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-500);
    margin-bottom: 8px;
}

.monthly-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.monthly-day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: 0.875rem;
    background: var(--gray-50);
    position: relative;
    min-height: 48px;
}

.monthly-day.empty {
    background: transparent;
}

.monthly-day.today {
    background: var(--primary);
}

.monthly-day.today,
.monthly-day.today .day-number,
.monthly-day.today.has-shift,
.monthly-day.today.has-shift .day-number {
    color: white !important;
}

.monthly-day.has-shift {
    background: var(--bg-primary);
    box-shadow: var(--shadow);
}

.monthly-day.today.has-shift {
    background: var(--primary);
}

.monthly-day .day-number {
    font-weight: 500;
    line-height: 1;
}

.monthly-day .shift-icons {
    display: flex;
    gap: 2px;
    margin-top: 4px;
    font-size: 0.875rem;
}

.monthly-day.today .shift-icons {
    filter: brightness(0) invert(1);
}

/* Listado de mis turnos */
.my-shifts-list-view {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.my-shift-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 14px 12px;
    background: var(--bg-primary);
    border-radius: 8px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform 0.1s;
}

.my-shift-item:active {
    transform: scale(0.98);
}

.my-shift-info {
    font-weight: 500;
    color: var(--text-primary);
}

.my-shift-item.past {
    opacity: 0.5;
}

.my-shift-status {
    font-size: 0.7rem;
    padding: 4px 8px;
    background: var(--warning);
    color: white;
    border-radius: 10px;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 32px 16px;
    color: var(--gray-500);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

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

/* Responsive para tablets/desktop */
@media (min-width: 768px) {
    body {
        background: var(--gray-200);
        padding: 20px;
    }

    #app {
        border-radius: var(--radius);
        box-shadow: var(--shadow-lg);
        min-height: calc(100vh - 40px);
    }

    .modal-content {
        border-radius: var(--radius);
        margin-bottom: 20px;
    }
}