/*
 * Room Kanri - Premium Design System
 * Modern Japanese UI with Material Design elements
 */

/* ========================================
   Fonts & Base
   ======================================== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;600;700&display=swap');

:root {
    /* Colors - Dark Mode (Default) */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #334155;
    --bg-hover: #475569;

    --accent-primary: #3b82f6;
    --accent-secondary: #60a5fa;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #f43f5e;
    --accent-purple: #8b5cf6;

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --border-color: rgba(255, 255, 255, 0.1);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
}

/* Light Mode */
[data-theme="light"] {
    --bg-primary: #f1f5f9;
    --bg-secondary: #ffffff;
    --bg-card: #e2e8f0;
    --bg-hover: #cbd5e1;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;

    --border-color: rgba(0, 0, 0, 0.1);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.15), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    width: 40px;
    height: 40px;
}

.theme-toggle:hover {
    background: var(--bg-hover);
    transform: rotate(15deg);
}

.theme-toggle .material-symbols-outlined {
    font-size: 20px;
}

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

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ========================================
   Header
   ======================================== */
.header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-md) var(--space-lg);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-title {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.header-title h1 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.header-date {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-card);
    border-radius: var(--radius-sm);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.logout-btn {
    color: var(--accent-danger);
    border: 1px solid var(--accent-danger);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.2s;
}

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

/* ========================================
   Layout
   ======================================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-lg);
}

.layout-grid {
    display: grid;
    gap: var(--space-lg);
}

@media (min-width: 1024px) {
    .layout-grid {
        grid-template-columns: 400px 1fr;
    }
}

/* ========================================
   Panel / Section
   ======================================== */
.panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

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

.panel-title {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.panel-body {
    padding: var(--space-md);
}

/* ========================================
   Building Section
   ======================================== */
.building-section {
    margin-bottom: var(--space-lg);
}

.building-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--space-md);
}

/* ========================================
   Room Cards
   ======================================== */
.room-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.room-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border-left: 4px solid var(--text-muted);
    transition: all 0.2s;
}

.room-card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow);
}

/* Status Colors */
.room-card.status-checkin {
    border-left-color: var(--accent-warning);
}

.room-card.status-staying {
    border-left-color: var(--accent-success);
}

.room-card.status-checkout {
    border-left-color: var(--accent-purple);
}

.room-card.status-dirty {
    border-left-color: var(--accent-danger);
}

.room-card.status-cleaning {
    border-left-color: var(--accent-secondary);
}

.room-card.status-empty {
    border-left-color: var(--text-muted);
}

.room-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.room-no {
    font-size: 1.25rem;
    font-weight: 700;
}

.room-status {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.8rem;
    font-weight: 500;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.1);
}

.room-status .material-symbols-outlined {
    font-size: 16px;
}

/* Status Badge Colors */
.room-status.s-checkin {
    background: rgba(245, 158, 11, 0.2);
    color: var(--accent-warning);
}

.room-status.s-staying {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent-success);
}

.room-status.s-checkout {
    background: rgba(139, 92, 246, 0.2);
    color: var(--accent-purple);
}

.room-status.s-dirty {
    background: rgba(244, 63, 94, 0.2);
    color: var(--accent-danger);
}

.room-status.s-cleaning {
    background: rgba(96, 165, 250, 0.2);
    color: var(--accent-secondary);
}

.room-status.s-empty {
    background: rgba(100, 116, 139, 0.2);
    color: var(--text-muted);
}

.room-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.room-guest {
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.room-time {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.room-tags {
    display: flex;
    gap: var(--space-xs);
}

.room-tag {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    background: var(--bg-hover);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.room-tag .material-symbols-outlined {
    font-size: 14px;
}

.room-memo {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding: var(--space-sm);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
}

.room-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn .material-symbols-outlined {
    font-size: 18px;
}

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

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

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

.btn-success:hover {
    filter: brightness(1.1);
}

.btn-warning {
    background: var(--accent-warning);
    color: #1a1a1a;
}

.btn-warning:hover {
    filter: brightness(1.1);
}

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

.btn-danger:hover {
    filter: brightness(1.1);
}

.btn-secondary {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--bg-card);
}

.btn-sm {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.8rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========================================
   Calendar / Gantt
   ======================================== */
.calendar-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.calendar-nav-btn {
    background: var(--bg-card);
    border: none;
    color: var(--text-primary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    font-family: inherit;
    transition: all 0.2s;
}

.calendar-nav-btn:hover {
    background: var(--bg-hover);
}

.calendar-month {
    font-size: 1.1rem;
    font-weight: 600;
    min-width: 150px;
    text-align: center;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--border-color);
}

.cal-header {
    background: var(--bg-card);
    padding: var(--space-sm);
    text-align: center;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.cal-header.sun {
    color: var(--accent-danger);
}

.cal-header.sat {
    color: var(--accent-primary);
}

.cal-day {
    background: var(--bg-secondary);
    min-height: 90px;
    padding: var(--space-sm);
}

.cal-day.other-month {
    background: var(--bg-primary);
    opacity: 0.5;
}

.cal-day.today {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid var(--accent-primary);
}

.cal-date {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: var(--space-xs);
}

.cal-events {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.cal-event {
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cal-event.type-in {
    background: var(--accent-warning);
    color: #1a1a1a;
}

.cal-event.type-out {
    background: var(--accent-purple);
    color: white;
}

.cal-event.type-stay {
    background: var(--accent-success);
    color: white;
    opacity: 0.7;
}

/* Room-specific colors for calendar */
.cal-event.room-color-0 {
    background: #4CAF50;
    color: white;
}

.cal-event.room-color-1 {
    background: #2196F3;
    color: white;
}

.cal-event.room-color-2 {
    background: #9C27B0;
    color: white;
}

.cal-event.room-color-3 {
    background: #FF5722;
    color: white;
}

.cal-event.room-color-4 {
    background: #00BCD4;
    color: white;
}

.cal-event.room-color-5 {
    background: #795548;
    color: white;
}

/* Override for type-stay (middle days) - lighter version */
.cal-event.type-stay.room-color-0 {
    background: #81C784;
}

.cal-event.type-stay.room-color-1 {
    background: #64B5F6;
}

.cal-event.type-stay.room-color-2 {
    background: #BA68C8;
}

.cal-event.type-stay.room-color-3 {
    background: #FF8A65;
}

.cal-event.type-stay.room-color-4 {
    background: #4DD0E1;
}

.cal-event.type-stay.room-color-5 {
    background: #A1887F;
}

/* IN/OUT enhanced styling */
.cal-event.type-in {
    background: var(--accent-warning);
    color: #1a1a1a;
    font-weight: 700;
    border-left: 3px solid #ff6b00;
    padding-left: 4px;
}

.cal-event.type-out {
    background: var(--accent-purple);
    color: white;
    font-weight: 700;
    border-right: 3px solid #4a148c;
    padding-right: 4px;
}

/* ========================================
   Gantt Chart Calendar
   ======================================== */
.gantt-container {
    display: flex;
    flex-direction: column;
    overflow-x: auto;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
}

.gantt-header,
.gantt-row {
    display: flex;
    min-width: max-content;
}

.gantt-header {
    position: sticky;
    top: 0;
    background: var(--bg-secondary);
    z-index: 10;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: var(--space-xs);
}

.gantt-room-label {
    min-width: 60px;
    max-width: 60px;
    padding: var(--space-xs);
    font-weight: 700;
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    border-radius: var(--radius-sm);
    margin-right: 2px;
}

.gantt-header .gantt-room-label {
    background: var(--bg-hover);
    color: var(--text-secondary);
}

.gantt-date-header {
    min-width: 32px;
    max-width: 32px;
    text-align: center;
    font-size: 0.7rem;
    padding: var(--space-xs) 2px;
    border-left: 1px solid var(--border-color);
}

.gantt-date-header.today {
    background: var(--accent-primary);
    color: white;
    font-weight: 700;
    border-radius: var(--radius-sm);
}

.gantt-date-header.sun {
    color: var(--accent-danger);
}

.gantt-date-header.sat {
    color: var(--accent-primary);
}

.gantt-row {
    margin-bottom: 2px;
}

.gantt-cell {
    min-width: 32px;
    max-width: 32px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    font-weight: 700;
    border-left: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.gantt-cell.today {
    border: 2px solid var(--accent-primary);
}

/* Room color backgrounds */
.gantt-cell.room-color-0 {
    background: #4CAF50;
    color: white;
}

.gantt-cell.room-color-1 {
    background: #2196F3;
    color: white;
}

.gantt-cell.room-color-2 {
    background: #9C27B0;
    color: white;
}

.gantt-cell.room-color-3 {
    background: #FF5722;
    color: white;
}

.gantt-cell.room-color-4 {
    background: #00BCD4;
    color: white;
}

.gantt-cell.room-color-5 {
    background: #795548;
    color: white;
}

/* Stay cells (middle days) - lighter */
.gantt-cell.cell-stay.room-color-0 {
    background: #A5D6A7;
}

.gantt-cell.cell-stay.room-color-1 {
    background: #90CAF9;
}

.gantt-cell.cell-stay.room-color-2 {
    background: #CE93D8;
}

.gantt-cell.cell-stay.room-color-3 {
    background: #FFAB91;
}

.gantt-cell.cell-stay.room-color-4 {
    background: #80DEEA;
}

.gantt-cell.cell-stay.room-color-5 {
    background: #BCAAA4;
}

/* IN/OUT cells */
.gantt-cell.cell-in {
    border-left: 3px solid #1B5E20;
}

.gantt-cell.cell-out {
    border-right: 3px solid #311B92;
}

/* Room label colors */
.gantt-room-label.room-color-0 {
    background: #4CAF50;
}

.gantt-room-label.room-color-1 {
    background: #2196F3;
}

.gantt-room-label.room-color-2 {
    background: #9C27B0;
}

.gantt-room-label.room-color-3 {
    background: #FF5722;
}

.gantt-room-label.room-color-4 {
    background: #00BCD4;
}

.gantt-room-label.room-color-5 {
    background: #795548;
}

/* ========================================
   Today's Flow Panel
   ======================================== */
.flow-section {
    margin-bottom: var(--space-lg);
}

.flow-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-color);
}

.flow-count {
    background: var(--accent-primary);
    color: white;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
}

.flow-title.out .flow-count {
    background: var(--accent-purple);
}

.flow-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.flow-item:last-child {
    border-bottom: none;
}

.flow-time {
    font-weight: 600;
    min-width: 50px;
    color: var(--text-secondary);
}

.flow-room {
    background: var(--bg-hover);
    padding: 2px 10px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.85rem;
}

.flow-guest {
    flex: 1;
}

.flow-status {
    font-size: 0.8rem;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.flow-status.done {
    background: var(--accent-success);
    color: white;
}

.flow-status.pending {
    background: var(--accent-warning);
    color: #1a1a1a;
}

/* ========================================
   Modal
   ======================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: var(--space-md);
}

.modal-overlay.open {
    display: flex;
}

.modal {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
}

.modal-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-body {
    padding: var(--space-lg);
}

.modal-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
}

/* ========================================
   Form Elements
   ======================================== */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.form-row {
    display: flex;
    gap: var(--space-md);
}

.form-row>* {
    flex: 1;
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9rem;
    cursor: pointer;
}

.form-checkbox input {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
}

/* ========================================
   Login Page
   ======================================== */
.login-container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.login-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.login-logo {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.login-logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.login-logo p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: var(--space-sm);
}

.login-form .form-group {
    margin-bottom: var(--space-lg);
}

.login-btn {
    width: 100%;
    padding: var(--space-md);
    font-size: 1rem;
    margin-top: var(--space-md);
}

.login-error {
    background: rgba(244, 63, 94, 0.1);
    border: 1px solid var(--accent-danger);
    color: var(--accent-danger);
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
    font-size: 0.9rem;
}

/* ========================================
   Utilities
   ======================================== */
.text-muted {
    color: var(--text-muted);
}

.text-success {
    color: var(--accent-success);
}

.text-warning {
    color: var(--accent-warning);
}

.text-danger {
    color: var(--accent-danger);
}

.mt-md {
    margin-top: var(--space-md);
}

.mb-md {
    margin-bottom: var(--space-md);
}

.hidden {
    display: none !important;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
        gap: var(--space-md);
    }

    .container {
        padding: var(--space-md);
    }

    .calendar-grid {
        font-size: 0.8rem;
    }

    .cal-day {
        min-height: 70px;
        padding: 4px;
    }
}