/* ============================================
   DateTime Picker - Sistema de Citas Online
   Dirección General de Pasaportes
   ============================================ */

.datetime-picker {
    --dp-primary: var(--primary-navy, #0d2e70);
    --dp-primary-light: var(--light-blue, #dbeafe);
    --dp-secondary: var(--secondary-blue, #2563eb);
    --dp-text: #374151;
    --dp-text-light: #6b7280;
    --dp-text-muted: #9ca3af;
    --dp-border: #e5e7eb;
    --dp-bg: #ffffff;
    --dp-hover: #f3f4f6;
    --dp-disabled: #f9fafb;
}

/* Layout Principal */
.datetime-picker {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .datetime-picker {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

/* ============================================
   CALENDARIO
   ============================================ */

.datetime-picker__calendar {
    background: var(--dp-bg);
    border: 1px solid var(--dp-border);
    border-radius: 12px;
    padding: 1.25rem;
}

/* Header con navegación */
.datetime-picker__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--dp-border);
}

.datetime-picker__month-year {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dp-text);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.datetime-picker__nav {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    color: var(--dp-text-light);
    transition: all 0.2s ease;
}

.datetime-picker__nav:hover:not(:disabled) {
    background: var(--dp-hover);
    color: var(--dp-primary);
}

.datetime-picker__nav:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.datetime-picker__nav svg {
    width: 20px;
    height: 20px;
}

/* Días de la semana */
.datetime-picker__weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin-bottom: 0.5rem;
}

.datetime-picker__weekday {
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--dp-text-muted);
    padding: 0.5rem 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Grid de días */
.datetime-picker__days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.datetime-picker__day {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--dp-text);
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.15s ease;
}

.datetime-picker__day:hover:not(.datetime-picker__day--disabled):not(.datetime-picker__day--selected):not(.datetime-picker__day--other-month) {
    background: var(--dp-hover);
}

/* Día de otro mes */
.datetime-picker__day--other-month {
    color: var(--dp-text-muted);
    opacity: 0.4;
    cursor: default;
}

/* Día actual */
.datetime-picker__day--today:not(.datetime-picker__day--selected) {
    font-weight: 700;
    color: var(--dp-secondary);
}

.datetime-picker__day--today::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--dp-secondary);
    border-radius: 50%;
}

.datetime-picker__day--today.datetime-picker__day--selected::after {
    background: white;
}

/* Día seleccionado */
.datetime-picker__day--selected {
    background: var(--dp-primary);
    color: white;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(13, 46, 112, 0.3);
}

.datetime-picker__day--selected:hover {
    background: var(--dp-primary);
}

/* Día deshabilitado */
.datetime-picker__day--disabled {
    color: var(--dp-text-muted);
    cursor: not-allowed;
    opacity: 0.4;
}

.datetime-picker__day--disabled:hover {
    background: transparent;
}

/* ============================================
   HORARIOS
   ============================================ */

.datetime-picker__times {
    background: var(--dp-bg);
    border: 1px solid var(--dp-border);
    border-radius: 12px;
    padding: 1.25rem;
    min-height: 280px;
    display: flex;
    flex-direction: column;
}

/* Placeholder inicial */
.datetime-picker__times-placeholder {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--dp-text-light);
    padding: 2rem 1rem;
}

.datetime-picker__times-placeholder svg {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.datetime-picker__times-placeholder span {
    font-size: 0.95rem;
}

/* Loading */
.datetime-picker__times-loading {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--dp-text-light);
}

.datetime-picker__times-loading .spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--dp-border);
    border-top-color: var(--dp-primary);
    border-radius: 50%;
    animation: dp-spin 0.8s linear infinite;
    margin-bottom: 1rem;
}

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

/* Sin horarios */
.datetime-picker__times-empty {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem 1rem;
    background: #fef3c7;
    border-radius: 8px;
    color: #92400e;
}

.datetime-picker__times-empty svg {
    width: 40px;
    height: 40px;
    margin-bottom: 0.75rem;
    color: #f59e0b;
}

.datetime-picker__times-empty span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Contenido de horarios */
.datetime-picker__times-content {
    flex: 1;
    overflow-y: auto;
}

/* Período (Mañana/Tarde) */
.datetime-picker__period {
    margin-bottom: 1.25rem;
}

.datetime-picker__period:last-child {
    margin-bottom: 0;
}

.datetime-picker__period-title {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--dp-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--dp-border);
}

/* Grid de slots */
.datetime-picker__slots {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

@media (min-width: 640px) {
    .datetime-picker__slots {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 768px) {
    .datetime-picker__slots {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .datetime-picker__slots {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Slot individual */
.datetime-picker__slot {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--dp-text);
    background: var(--dp-bg);
    border: 1px solid var(--dp-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.datetime-picker__slot:hover:not(.datetime-picker__slot--selected):not(.datetime-picker__slot--disabled) {
    border-color: var(--dp-primary);
    background: var(--dp-primary-light);
}

/* Slot seleccionado */
.datetime-picker__slot--selected {
    background: var(--dp-primary);
    border-color: var(--dp-primary);
    color: white;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(13, 46, 112, 0.25);
}

/* Slot deshabilitado */
.datetime-picker__slot--disabled {
    color: var(--dp-text-muted);
    background: var(--dp-disabled);
    border-color: transparent;
    cursor: not-allowed;
    opacity: 0.6;
}

/* ============================================
   UTILIDADES
   ============================================ */

.datetime-picker .hidden {
    display: none !important;
}

/* Animación de entrada */
.datetime-picker__times-content {
    animation: dp-fade-in 0.2s ease;
}

@keyframes dp-fade-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Información del horario */
.datetime-picker__schedule-info {
    margin-top: 1rem;
    padding: 0.75rem;
    background: var(--dp-primary-light);
    border-radius: 8px;
    font-size: 0.8rem;
    color: var(--dp-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.datetime-picker__schedule-info svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* ============================================
   RESPONSIVE AJUSTES FINALES
   ============================================ */

@media (max-width: 640px) {
    .datetime-picker__calendar,
    .datetime-picker__times {
        padding: 1rem;
    }

    .datetime-picker__day {
        font-size: 0.85rem;
    }

    .datetime-picker__month-year {
        font-size: 1rem;
    }
}