/* ==========================================================================
   RentalRoom - CSS Design System
   清潔感のあるビジネスデザイン（整体師・マッサージ師向け）
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables
   -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --color-primary: #008080;
    --color-primary-dark: #006666;
    --color-primary-light: #00a0a0;
    --color-secondary: #4a5568;
    --color-success: #38a169;
    --color-warning: #d69e2e;
    --color-danger: #e53e3e;
    
    --color-bg: #f7fafc;
    --color-bg-card: #ffffff;
    --color-border: #e2e8f0;
    --color-text: #2d3748;
    --color-text-light: #718096;
    --color-text-muted: #a0aec0;
    
    /* Timeline colors */
    --color-block-unavailable: #cbd5e0;
    --color-block-reserved: #4299e1;
    --color-block-selected: var(--color-primary);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    
    /* Typography */
    --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    
    /* Layout */
    --max-width: 1200px;
    --max-width-content: 800px;
    --header-height: 60px;
}

/* --------------------------------------------------------------------------
   Reset & Base
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.header {
    position: sticky;
    top: 0;
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
    z-index: 100;
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
}

.logo:hover {
    text-decoration: none;
}

.nav-desktop {
    display: none;
}

.nav-desktop a {
    margin-left: var(--spacing-lg);
    color: var(--color-text);
    font-weight: 500;
}

.nav-desktop a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

@media (min-width: 768px) {
    .nav-desktop {
        display: flex;
        align-items: center;
    }
    
    .hamburger {
        display: none;
    }
}

/* Hamburger Menu */
.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 30px;
    height: 30px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
.nav-mobile {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md);
    z-index: 99;
}

.nav-mobile.open {
    display: block;
}

.nav-mobile a {
    display: block;
    padding: var(--spacing-sm) 0;
    color: var(--color-text);
    font-weight: 500;
}

@media (min-width: 768px) {
    .nav-mobile {
        display: none !important;
    }
}

/* --------------------------------------------------------------------------
   Main Content
   -------------------------------------------------------------------------- */
.main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
    min-height: calc(100vh - var(--header-height) - 80px);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    background: var(--color-bg-card);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.card-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

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

.btn:hover {
    text-decoration: none;
}

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

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

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

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

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

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

.btn-block {
    display: block;
    width: 100%;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-text);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    transition: border-color 0.2s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 128, 128, 0.1);
}

.form-error {
    color: var(--color-danger);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

/* --------------------------------------------------------------------------
   Alerts / Notices
   -------------------------------------------------------------------------- */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.alert-warning {
    background: #fffbeb;
    border: 1px solid #fbbf24;
    color: #92400e;
}

.alert-info {
    background: #eff6ff;
    border: 1px solid #3b82f6;
    color: #1e40af;
}

.alert-success {
    background: #f0fdf4;
    border: 1px solid #22c55e;
    color: #166534;
}

.alert-danger {
    background: #fef2f2;
    border: 1px solid #ef4444;
    color: #991b1b;
}

.alert-title {
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.alert ul {
    margin: 0;
    padding-left: var(--spacing-lg);
}

.alert li {
    margin-bottom: var(--spacing-xs);
}

/* --------------------------------------------------------------------------
   Room Card
   -------------------------------------------------------------------------- */
.room-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-md);
}

.room-card-image {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    flex-shrink: 0;
}

.room-card-content {
    flex: 1;
}

.room-card-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.room-card-price {
    color: var(--color-primary);
    font-weight: 700;
}

/* --------------------------------------------------------------------------
   Calendar
   -------------------------------------------------------------------------- */
.calendar {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

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

.calendar-title {
    font-weight: 700;
}

.calendar-nav {
    display: flex;
    gap: var(--spacing-sm);
}

.calendar-nav button {
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    text-align: center;
}

.calendar-weekday {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    padding: var(--spacing-xs);
}

.calendar-day {
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.calendar-day:hover {
    background: var(--color-bg);
}

.calendar-day.selected {
    background: var(--color-primary);
    color: white;
}

.calendar-day.unavailable {
    background: var(--color-block-unavailable);
    color: var(--color-text-muted);
    cursor: not-allowed;
}

.calendar-day.other-month {
    color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Timeline
   -------------------------------------------------------------------------- */
.timeline {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    max-height: 400px;
    overflow-y: auto;
}

.timeline-row {
    display: flex;
    align-items: stretch;
    min-height: 40px;
    border-bottom: 1px solid var(--color-border);
}

.timeline-time {
    width: 60px;
    flex-shrink: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    padding: var(--spacing-xs);
    text-align: right;
    padding-right: var(--spacing-sm);
}

.timeline-slot {
    flex: 1;
    margin: 2px 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.timeline-slot.available {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
}

.timeline-slot.available:hover {
    background: rgba(0, 128, 128, 0.1);
    border-color: var(--color-primary);
}

.timeline-slot.selected {
    background: var(--color-block-selected);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
}

.timeline-slot.reserved {
    background: var(--color-block-reserved);
    color: white;
    cursor: not-allowed;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
}

.timeline-slot.blocked {
    background: var(--color-block-unavailable);
    color: var(--color-text-muted);
    cursor: not-allowed;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
}

/* --------------------------------------------------------------------------
   Summary
   -------------------------------------------------------------------------- */
.summary {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-xs);
}

.summary-total {
    font-size: var(--font-size-lg);
    font-weight: 700;
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

/* --------------------------------------------------------------------------
   Two-Column Layout (Desktop)
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
    .layout-two-col {
        display: grid;
        grid-template-columns: 1fr 400px;
        gap: var(--spacing-xl);
    }
    
    .layout-sidebar {
        position: sticky;
        top: calc(var(--header-height) + var(--spacing-lg));
        height: fit-content;
    }
}

/* --------------------------------------------------------------------------
   Utilities
   -------------------------------------------------------------------------- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-light); }
.text-primary { color: var(--color-primary); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }

.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.hidden { display: none; }
.block { display: block; }
.flex { display: flex; }
.flex-between { justify-content: space-between; }
.flex-center { align-items: center; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }

/* --------------------------------------------------------------------------
   Badge
   -------------------------------------------------------------------------- */
.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
}

.badge-success {
    background: #d1fae5;
    color: #065f46;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

/* --------------------------------------------------------------------------
   Table
   -------------------------------------------------------------------------- */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table th {
    background: var(--color-bg);
    font-weight: 500;
}

.table tbody tr:hover {
    background: var(--color-bg);
}

/* --------------------------------------------------------------------------
   Responsive Table
   -------------------------------------------------------------------------- */
@media (max-width: 767px) {
    .table-responsive {
        overflow-x: auto;
    }
}