/* ============================================
   Mobile-First Responsive Design
   Carbon Calculator - LESS-FOR-01 v6
   ============================================ */

:root {
    --primary: #10b981;
    --primary-dark: #059669;
    --primary-light: #34d399;
    --secondary: #3b82f6;
    --accent: #f59e0b;
    --danger: #ef4444;
    --bg-body: #f0f9ff;
    --bg-card: #ffffff;
    --text-dark: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow: 0 2px 4px -1px rgba(0,0,0,0.1), 0 1px 2px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 12px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-2xl: 24px;
}

/* ============================================
   Base Styles (Mobile First)
   ============================================ */

* { 
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; 
    box-sizing: border-box; 
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: 14px; /* Base font size for mobile */
    -webkit-text-size-adjust: 100%;
    touch-action: manipulation;
    -webkit-touch-callout: none;
    overflow-x: hidden;
}

body { 
    background: var(--bg-body); 
    background-attachment: fixed; 
    color: var(--text-dark); 
    font-size: 1rem;
    line-height: 1.5;
    min-height: 100vh; 
    padding-bottom: 70px;
    margin: 0;
    overflow-x: hidden;
    touch-action: manipulation;
    -webkit-touch-callout: none;
}

/* อนุญาตให้ select text ใน content */
.card, .project-list-item, p, span, div, h1, h2, h3, h4, h5, h6 {
    -webkit-user-select: text;
    user-select: text;
}

/* อนุญาตให้ select text ใน input และ textarea */
input, textarea, select {
    -webkit-user-select: auto;
    user-select: auto;
}

/* ============================================
   Typography (Mobile First)
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.9rem; }

p {
    margin: 0 0 var(--spacing-md);
}

/* ============================================
   Navbar (Mobile First)
   ============================================ */

.navbar { 
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%); 
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand { 
    color: #fff !important; 
    font-weight: 700; 
    font-size: 1rem;
    display: flex; 
    align-items: center; 
    gap: var(--spacing-sm);
    text-decoration: none;
}

.navbar-brand i { 
    font-size: 1.25rem; 
}

.version-badge { 
    background: rgba(255,255,255,0.25); 
    color: #fff; 
    font-size: 0.65rem; 
    padding: 3px 10px; 
    border-radius: 16px; 
    font-weight: 500;
    display: none; /* Hidden on mobile */
}

.user-avatar { 
    width: 32px; 
    height: 32px; 
    border-radius: 50%; 
    border: 2px solid rgba(255,255,255,0.5); 
    cursor: pointer; 
    object-fit: cover; 
    display: block; 
    background: rgba(255,255,255,0.2);
    flex-shrink: 0;
}

.user-name { 
    color: #fff; 
    font-weight: 500; 
    font-size: 0.8rem; 
}

.btn-login { 
    background: #fff; 
    color: var(--primary-dark); 
    font-weight: 600; 
    padding: 6px 12px; 
    border-radius: var(--radius-sm); 
    border: none; 
    display: flex; 
    align-items: center; 
    gap: 6px;
    font-size: 0.85rem;
    white-space: nowrap;
}

.btn-login:hover { 
    background: #f0fdf4; 
}

.btn-login img { 
    width: 16px; 
    height: 16px; 
}

.online-users { 
    display: none; /* Hidden on mobile */
    align-items: center; 
    margin-right: var(--spacing-md);
}

.online-avatar { 
    width: 24px; 
    height: 24px; 
    border-radius: 50%; 
    border: 2px solid #fff; 
    margin-left: -6px; 
}

.online-avatar:first-child { 
    margin-left: 0; 
}

.online-count { 
    background: var(--primary-light); 
    color: #fff; 
    font-size: 0.6rem; 
    font-weight: 600; 
    padding: 2px 5px; 
    border-radius: 8px; 
    margin-left: 4px; 
}

/* ============================================
   Main Container (Mobile First)
   ============================================ */

.main-container { 
    max-width: 100%;
    margin: 0 auto; 
    padding: var(--spacing-lg);
}

/* ============================================
   Cards (Mobile First)
   ============================================ */

.card { 
    background: var(--bg-card); 
    border: 1px solid #f3f4f6; 
    border-radius: var(--radius); 
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08); 
    margin-bottom: var(--spacing-lg); 
    overflow: hidden; 
    transition: transform 0.2s, box-shadow 0.2s; 
}

.card:hover { 
    transform: translateY(-2px); 
    box-shadow: var(--shadow-lg); 
}

.card-header { 
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); 
    color: #fff; 
    font-weight: 600; 
    padding: var(--spacing-md) var(--spacing-lg); 
    font-size: 0.9rem; 
    border: none; 
    display: flex; 
    justify-content: space-between; 
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.card-header i { 
    margin-right: var(--spacing-sm); 
}

.card-body { 
    padding: var(--spacing-lg); 
}

/* ============================================
   Stats Container (Mobile First)
   ============================================ */

.stats-container { 
    display: grid; 
    grid-template-columns: repeat(2, 1fr); 
    gap: var(--spacing-md); 
    margin-bottom: var(--spacing-xl);
}

.stat-card { 
    background: var(--bg-card); 
    border-radius: var(--radius); 
    padding: var(--spacing-lg); 
    text-align: center; 
    box-shadow: var(--shadow); 
    position: relative; 
    overflow: hidden; 
    transition: transform 0.2s; 
}

.stat-card:hover { 
    transform: translateY(-2px); 
}

.stat-card::before { 
    content: ''; 
    position: absolute; 
    top: 0; 
    left: 0; 
    right: 0; 
    height: 3px; 
}

.stat-card.trees::before { background: linear-gradient(90deg, #22c55e, #4ade80); }
.stat-card.bamboo::before { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.stat-card.co2::before { background: linear-gradient(90deg, #3b82f6, #60a5fa); }
.stat-card.total::before { background: linear-gradient(90deg, #ec4899, #f472b6); }

.stat-icon { 
    width: 40px; 
    height: 40px; 
    border-radius: 10px; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    margin: 0 auto var(--spacing-sm); 
    font-size: 1.2rem; 
}

.stat-card.trees .stat-icon { background: #dcfce7; color: #16a34a; }
.stat-card.bamboo .stat-icon { background: #fef3c7; color: #d97706; }
.stat-card.co2 .stat-icon { background: #dbeafe; color: #2563eb; }
.stat-card.total .stat-icon { background: #fce7f3; color: #db2777; }

.stat-value { 
    font-size: 1.4rem; 
    font-weight: 700; 
    color: var(--text-dark); 
    line-height: 1; 
}

.stat-label { 
    font-size: 0.7rem; 
    color: var(--text-muted); 
    margin-top: var(--spacing-xs); 
    font-weight: 500; 
}

/* ============================================
   Buttons (Mobile First)
   ============================================ */

.btn { 
    font-weight: 500; 
    border-radius: var(--radius-sm); 
    padding: 8px 16px; 
    font-size: 0.85rem; 
    transition: all 0.2s; 
    display: inline-flex; 
    align-items: center; 
    justify-content: center;
    gap: 6px;
    border: none;
    cursor: pointer;
    touch-action: manipulation;
    min-height: 40px; /* Touch-friendly */
}

.btn-primary { 
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); 
    color: #fff; 
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3); 
}

.btn-primary:hover { 
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%); 
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

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

.btn-light { 
    background: #fff; 
    border: 1px solid var(--border); 
    color: var(--text-dark); 
}

.btn-light:hover { 
    background: #f8fafc; 
    border-color: var(--primary); 
    color: var(--primary); 
}

.btn-outline-danger { 
    border: 1px solid var(--danger); 
    color: var(--danger); 
    background: transparent; 
}

.btn-outline-danger:hover { 
    background: var(--danger); 
    color: #fff; 
}

.btn-sm { 
    padding: 6px 12px; 
    font-size: 0.8rem;
    min-height: 32px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 1rem;
    min-height: 48px;
}

.btn-google { 
    background: #fff; 
    border: 2px solid var(--border); 
    color: var(--text-dark); 
    width: 100%; 
    padding: 12px var(--spacing-lg); 
    font-size: 0.95rem; 
    font-weight: 600;
    min-height: 48px;
}

.btn-google:hover { 
    border-color: var(--primary); 
    background: #f8fafc; 
}

.btn-google img { 
    width: 20px; 
    height: 20px; 
}

/* ============================================
   Forms (Mobile First)
   ============================================ */

.form-control, .form-select { 
    border-radius: var(--radius-sm); 
    border: 2px solid var(--border); 
    padding: 10px 14px; 
    font-size: 16px; /* 16px minimum to prevent iOS zoom */
    transition: all 0.2s;
    width: 100%;
    min-height: 44px; /* Touch-friendly (Apple recommends 44px) */
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.form-control:focus, .form-select:focus { 
    border-color: var(--primary); 
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1); 
    outline: none;
}

.form-label { 
    font-weight: 600; 
    font-size: 0.85rem; 
    margin-bottom: var(--spacing-sm); 
    color: var(--text-dark); 
    display: block;
}

/* ============================================
   Navigation Tabs (Mobile First)
   ============================================ */

.nav-tabs { 
    border: none; 
    gap: var(--spacing-sm); 
    margin-bottom: var(--spacing-lg); 
    flex-wrap: nowrap; 
    overflow-x: auto; 
    overflow-y: hidden;
    padding-bottom: var(--spacing-xs);
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.nav-tabs::-webkit-scrollbar { 
    display: none; 
}

.nav-tabs .nav-link { 
    border: none; 
    border-radius: var(--radius-sm); 
    padding: 10px 16px; 
    font-weight: 600; 
    font-size: 0.8rem; 
    color: var(--text-muted); 
    background: var(--bg-card); 
    white-space: nowrap; 
    transition: all 0.2s; 
    box-shadow: var(--shadow);
    min-width: fit-content;
}

.nav-tabs .nav-link.active { 
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); 
    color: #fff; 
}

.nav-tabs .nav-link:hover:not(.active) { 
    color: var(--primary); 
    transform: translateY(-1px); 
}

.nav-tabs .nav-link i {
    margin-right: 4px;
}

/* ============================================
   DataTables (Mobile First)
   ============================================ */

.dataTables_wrapper { 
    font-size: 0.85rem; 
}

.dataTables_filter input { 
    border-radius: var(--radius-sm) !important; 
    border: 2px solid var(--border) !important; 
    padding: 6px 12px !important;
    font-size: 0.85rem !important;
    min-height: 36px;
}

table.dataTable thead th { 
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); 
    color: #fff; 
    font-weight: 600; 
    padding: 10px 8px; 
    border: none !important; 
    white-space: nowrap; 
    font-size: 0.8rem; 
}

table.dataTable tbody td { 
    padding: 8px; 
    vertical-align: middle; 
    border-color: var(--border);
    font-size: 0.85rem;
}

table.dataTable tbody tr:hover { 
    background: #f0fdf4 !important; 
}

.dataTables_paginate .paginate_button.current { 
    background: var(--primary) !important; 
    border-color: var(--primary) !important; 
    color: #fff !important; 
    border-radius: 6px !important; 
}

/* ============================================
   Badges (Mobile First)
   ============================================ */

.badge { 
    font-weight: 500; 
    padding: 4px 8px; 
    border-radius: 6px; 
    font-size: 0.65rem;
    display: inline-block;
}

.badge-general { background: linear-gradient(135deg, #dcfce7, #bbf7d0); color: #15803d; }
.badge-mangrove { background: linear-gradient(135deg, #cffafe, #a5f3fc); color: #0e7490; }
.badge-palm { background: linear-gradient(135deg, #fef3c7, #fde68a); color: #b45309; }
.badge-vine { background: linear-gradient(135deg, #f3e8ff, #e9d5ff); color: #7e22ce; }
.badge-bamboo { background: linear-gradient(135deg, #fef3c7, #fde68a); color: #92400e; }
.badge-owner { background: linear-gradient(135deg, #fef3c7, #fde68a); color: #92400e; }
.badge-editor { background: linear-gradient(135deg, #dbeafe, #bfdbfe); color: #1d4ed8; }
.badge-viewer { background: linear-gradient(135deg, #f1f5f9, #e2e8f0); color: #475569; }
.badge-pending { background: linear-gradient(135deg, #fef3c7, #fde68a); color: #b45309; }
.badge-accepted { background: linear-gradient(135deg, #dcfce7, #bbf7d0); color: #15803d; }

/* ============================================
   Modals (Mobile First)
   ============================================ */

.modal-content { 
    border: none; 
    border-radius: var(--radius); 
    overflow: hidden;
    margin: var(--spacing-lg);
}

.modal-header { 
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); 
    color: #fff; 
    padding: var(--spacing-md) var(--spacing-lg); 
    border: none; 
}

.modal-title { 
    font-weight: 700; 
    font-size: 0.95rem; 
}

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

.modal-footer { 
    padding: var(--spacing-md) var(--spacing-lg); 
    border-top: 1px solid var(--border);
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.modal-footer .btn {
    flex: 1;
    min-width: 100px;
}

/* ============================================
   Project Items (Mobile First)
   ============================================ */

.project-item { 
    padding: var(--spacing-md) var(--spacing-lg); 
    border-bottom: 1px solid var(--border); 
    cursor: pointer; 
    transition: all 0.2s; 
    display: flex; 
    justify-content: space-between; 
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.project-item:hover { 
    background: linear-gradient(135deg, #f0fdf4, #ecfdf5); 
}

.project-item.active { 
    background: linear-gradient(135deg, #dcfce7, #d1fae5); 
    border-left: 4px solid var(--primary); 
}

.project-name { 
    font-weight: 600; 
    font-size: 0.85rem; 
    color: var(--text-dark); 
}

.project-meta { 
    font-size: 0.7rem; 
    color: var(--text-muted); 
    margin-top: 2px; 
}

.project-badge { 
    font-size: 0.6rem; 
    padding: 2px 5px; 
}

.project-info { 
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%); 
    border-radius: var(--radius); 
    padding: var(--spacing-md) var(--spacing-lg); 
    margin-bottom: var(--spacing-lg); 
    border: 2px solid #a7f3d0; 
    display: flex; 
    justify-content: space-between; 
    align-items: flex-start; 
    flex-wrap: wrap; 
    gap: var(--spacing-md); 
}

.project-info h4 { 
    font-size: 1rem; 
    font-weight: 700; 
    margin: 0; 
    color: var(--primary-dark); 
}

.project-info p { 
    font-size: 0.75rem; 
    color: var(--text-muted); 
    margin: 2px 0 0; 
}

/* ============================================
   Charts (Mobile First)
   ============================================ */

.chart-container { 
    position: relative; 
    height: 240px; 
    margin: var(--spacing-md) 0; 
}

/* ============================================
   Welcome Screen (Mobile First)
   ============================================ */

.welcome-screen { 
    text-align: center; 
    padding: var(--spacing-2xl) var(--spacing-lg); 
}

.welcome-icon { 
    font-size: 3rem; 
    background: linear-gradient(135deg, var(--primary), var(--primary-light)); 
    -webkit-background-clip: text; 
    background-clip: text;
    -webkit-text-fill-color: transparent; 
    animation: float 3s ease-in-out infinite; 
}

@keyframes float { 
    0%, 100% { transform: translateY(0); } 
    50% { transform: translateY(-10px); } 
}

.welcome-title { 
    font-size: 1.25rem; 
    font-weight: 700; 
    margin: var(--spacing-lg) 0 var(--spacing-sm); 
    color: var(--text-dark); 
}

.welcome-subtitle { 
    color: var(--text-muted); 
    font-size: 0.9rem; 
    margin-bottom: var(--spacing-xl); 
}

/* ============================================
   Login Screen (Mobile First)
   ============================================ */

.login-screen { 
    min-height: 70vh; 
    display: flex; 
    flex-direction: column;
    align-items: center; 
    justify-content: flex-start; 
    padding: var(--spacing-lg);
    gap: var(--spacing-lg);
}

.login-screen .card {
    max-width: 100%;
    width: 100%;
}

.login-card { 
    background: var(--bg-card); 
    border-radius: var(--radius); 
    padding: var(--spacing-xl); 
    max-width: 100%;
    width: 100%; 
    box-shadow: var(--shadow-lg); 
    text-align: center; 
}

.login-card .welcome-icon { 
    font-size: 3rem; 
    margin-bottom: var(--spacing-lg); 
}

.login-card h2 { 
    font-size: 1.2rem; 
    font-weight: 700; 
    margin-bottom: var(--spacing-sm); 
}

.login-card p { 
    color: var(--text-muted); 
    margin-bottom: var(--spacing-xl); 
    font-size: 0.85rem; 
}

/* ============================================
   Member Items (Mobile First)
   ============================================ */

.member-item { 
    display: flex; 
    align-items: center; 
    padding: var(--spacing-md) 0; 
    border-bottom: 1px solid var(--border); 
    gap: var(--spacing-md);
}

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

.member-avatar { 
    width: 36px; 
    height: 36px; 
    border-radius: 50%; 
    margin-right: var(--spacing-md); 
    background: var(--border);
    flex-shrink: 0;
}

.member-avatar.pending { 
    opacity: 0.5; 
}

.member-info { 
    flex: 1; 
    min-width: 0;
}

.member-name { 
    font-weight: 600; 
    font-size: 0.85rem; 
}

.member-email { 
    font-size: 0.75rem; 
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.member-actions { 
    display: flex; 
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

/* ============================================
   Activity Toast (Mobile First)
   ============================================ */

.activity-toast { 
    position: fixed; 
    bottom: 90px; 
    left: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--bg-card); 
    border-radius: var(--radius-sm); 
    box-shadow: var(--shadow-lg); 
    padding: var(--spacing-md); 
    display: flex; 
    align-items: center; 
    gap: var(--spacing-md); 
    z-index: 1050; 
    animation: slideIn 0.3s ease; 
    max-width: 100%;
}

@keyframes slideIn { 
    from { transform: translateY(100%); opacity: 0; } 
    to { transform: translateY(0); opacity: 1; } 
}

.activity-toast img { 
    width: 32px; 
    height: 32px; 
    border-radius: 50%;
    flex-shrink: 0;
}

.activity-toast .message { 
    font-size: 0.8rem;
    flex: 1;
    min-width: 0;
}

.activity-toast .message strong { 
    color: var(--primary-dark); 
}

/* ============================================
   Bottom Navigation (Mobile Only)
   ============================================ */

.bottom-nav { 
    position: fixed; 
    bottom: 0; 
    left: 0; 
    right: 0; 
    background: #ffffff; 
    border-top: 1px solid #e5e7eb; 
    display: flex; 
    justify-content: space-around; 
    align-items: center;
    padding: 8px 0; 
    padding-bottom: calc(8px + env(safe-area-inset-bottom)); 
    z-index: 1000; 
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.08); 
}

.bottom-nav a { 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    justify-content: center;
    color: #6b7280; 
    text-decoration: none; 
    font-size: 0.65rem; 
    font-weight: 500; 
    padding: 4px 12px; 
    border-radius: 8px; 
    transition: all 0.2s;
    min-width: 50px;
    flex: 1;
    position: relative;
}

.bottom-nav a i { 
    font-size: 1.3rem; 
    margin-bottom: 2px; 
}

.bottom-nav a.active { 
    color: #10b981; 
}

.bottom-nav a.active i {
    color: #10b981;
}

.bottom-nav a:not(.active):hover { 
    color: #374151; 
    background: #f9fafb;
}

/* ============================================
   FAB Button (Mobile Only)
   ============================================ */

.fab { 
    position: fixed; 
    bottom: 20px; 
    left: 50%;
    transform: translateX(-50%);
    width: 64px; 
    height: 64px; 
    border-radius: 50%; 
    background: linear-gradient(135deg, #fbbf24, #f59e0b); 
    color: #fff; 
    border: 4px solid #ffffff;
    font-size: 1.8rem; 
    box-shadow: 0 4px 20px rgba(251, 191, 36, 0.5), 0 2px 8px rgba(0, 0, 0, 0.15); 
    z-index: 1001; 
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    touch-action: manipulation;
}

.fab:hover, .fab:active { 
    transform: translateX(-50%) scale(1.1); 
    box-shadow: 0 6px 24px rgba(251, 191, 36, 0.6), 0 4px 12px rgba(0, 0, 0, 0.2);
    background: linear-gradient(135deg, #fcd34d, #fbbf24);
}

/* ============================================
   Loading Overlay
   ============================================ */

.loading-overlay { 
    position: fixed; 
    top: 0; 
    left: 0; 
    right: 0; 
    bottom: 0; 
    background: rgba(255,255,255,0.95); 
    display: flex; 
    flex-direction: column; 
    justify-content: center; 
    align-items: center; 
    z-index: 9999;
}

/* jQuery UI Autocomplete z-index fix for modals */
.ui-autocomplete {
    z-index: 9999 !important;
    max-height: 300px;
    overflow-y: auto;
    overflow-x: hidden; 
}

/* Fix dropdown menu z-index to be above FAB and bottom-nav */
.dropdown-menu {
    z-index: 1002 !important;
}

/* Ensure project list dropdown is clickable */
.project-list-item {
    position: relative;
    z-index: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.2s;
}

.project-list-item:hover {
    background: linear-gradient(135deg, #f0fdf4, #ecfdf5);
}

.project-list-item.active {
    background: linear-gradient(135deg, #dcfce7, #d1fae5);
    border-left: 4px solid var(--primary);
}

.project-list-item .project-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-left: 1rem;
}

.project-list-item .btn-action {
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.2s;
    border: none;
    font-size: 1rem;
    cursor: pointer;
}

.project-list-item .btn-edit {
    background: #f0f9ff;
    color: #3b82f6;
}

.project-list-item .btn-edit:hover {
    background: #dbeafe;
    color: #2563eb;
    transform: scale(1.05);
}

.project-list-item .btn-edit:active {
    transform: scale(0.95);
}

.project-list-item .btn-delete {
    background: #fef2f2;
    color: #ef4444;
}

.project-list-item .btn-delete:hover {
    background: #fee2e2;
    color: #dc2626;
    transform: scale(1.05);
}

.project-list-item .btn-delete:active {
    transform: scale(0.95);
}

.spinner-grow { 
    width: 3rem; 
    height: 3rem; 
}

/* ============================================
   Summary Table (Mobile First)
   ============================================ */

.summary-table { 
    width: 100%; 
    border-collapse: collapse;
    font-size: 0.85rem;
}

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

.summary-table th { 
    background: #f8fafc; 
    font-weight: 600;
    font-size: 0.8rem;
}

.summary-table tr:hover { 
    background: #f0fdf4; 
}

.summary-total { 
    background: linear-gradient(135deg, #dcfce7, #bbf7d0) !important; 
    font-weight: 700; 
}

/* ============================================
   Clump Card (Mobile First)
   ============================================ */

.clump-card { 
    background: linear-gradient(135deg, #f8fafc, #f1f5f9); 
    border-radius: var(--radius); 
    padding: var(--spacing-md); 
    margin-bottom: var(--spacing-md); 
    border-left: 4px solid var(--primary); 
}

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

.clump-title { 
    font-weight: 700; 
    font-size: 0.9rem; 
}

.clump-co2 { 
    background: linear-gradient(135deg, #dcfce7, #bbf7d0); 
    color: #15803d; 
    padding: 4px 10px; 
    border-radius: 12px; 
    font-size: 0.7rem; 
    font-weight: 600; 
}

/* ============================================
   Action Buttons (Mobile First)
   ============================================ */

.action-btn { 
    width: 32px; 
    height: 32px; 
    border-radius: 6px; 
    display: inline-flex; 
    align-items: center; 
    justify-content: center; 
    border: none; 
    background: transparent; 
    transition: all 0.2s;
    cursor: pointer;
    touch-action: manipulation;
}

.action-btn.edit { 
    color: var(--secondary); 
}

.action-btn.edit:hover { 
    background: #dbeafe; 
}

.action-btn.delete { 
    color: var(--danger); 
}

.action-btn.delete:hover { 
    background: #fee2e2; 
}

/* ============================================
   Features Grid (Mobile First)
   ============================================ */

.features-grid { 
    display: grid; 
    grid-template-columns: repeat(1, 1fr); 
    gap: var(--spacing-md); 
    margin-top: var(--spacing-xl); 
}

.feature-card { 
    background: var(--bg-card); 
    border-radius: var(--radius); 
    padding: var(--spacing-lg); 
    text-align: center; 
    box-shadow: var(--shadow); 
    transition: all 0.3s; 
}

.feature-card:hover { 
    transform: translateY(-4px); 
    box-shadow: var(--shadow-lg); 
}

.feature-card i { 
    font-size: 1.75rem; 
    margin-bottom: var(--spacing-md); 
}

.feature-card.green i { color: var(--primary); }
.feature-card.blue i { color: var(--secondary); }
.feature-card.orange i { color: var(--accent); }

.feature-card h5 { 
    font-weight: 700; 
    font-size: 0.9rem; 
    margin-bottom: var(--spacing-xs); 
}

.feature-card p { 
    font-size: 0.75rem; 
    color: var(--text-muted); 
    margin: 0; 
}

/* ============================================
   Alerts (Mobile First)
   ============================================ */

.alert { 
    border-radius: var(--radius-sm); 
    border: none; 
    font-size: 0.8rem; 
    padding: var(--spacing-md); 
}

.alert-success { 
    background: linear-gradient(135deg, #ecfdf5, #d1fae5); 
    color: #065f46; 
}

.alert-info { 
    background: linear-gradient(135deg, #eff6ff, #dbeafe); 
    color: #1e40af; 
}

/* ============================================
   Invitation Card (Mobile First)
   ============================================ */

.invitation-card { 
    background: linear-gradient(135deg, #fffbeb, #fef3c7); 
    border-radius: var(--radius); 
    padding: var(--spacing-md); 
    margin-bottom: var(--spacing-sm); 
    border-left: 4px solid var(--accent); 
}

.invitation-project { 
    font-weight: 700; 
    font-size: 0.9rem; 
}

.invitation-from { 
    font-size: 0.75rem; 
    color: var(--text-muted); 
}

/* ============================================
   Utility Classes
   ============================================ */

.hide-mobile { 
    display: none !important;
}

.show-mobile {
    display: block !important;
}

/* ============================================
   Prevent iOS Auto-Zoom on Input Focus
   ============================================ */

/* ป้องกันการซูมอัตโนมัติใน iOS เมื่อกรอกข้อมูล - ต้องใช้ font-size 16px ขึ้นไป */
@media (max-width: 768px) {
    .form-control, .form-select, 
    input[type="number"], input[type="text"], input[type="email"], 
    input[type="tel"], input[type="url"], input[type="search"],
    textarea, select {
        font-size: 16px !important;
        -webkit-text-size-adjust: 100%;
        -webkit-appearance: none;
        appearance: none;
    }
    
    /* สำหรับ input ที่อยู่ใน modal */
    .modal .form-control, .modal .form-select,
    .modal input[type="number"], .modal input[type="text"],
    .modal textarea, .modal select {
        font-size: 16px !important;
    }
    
    /* สำหรับ input ที่มี class form-control-sm */
    .form-control-sm {
        font-size: 16px !important;
        padding: 8px 12px;
    }
}

/* ============================================
   Tablet Styles (min-width: 768px)
   ============================================ */

@media (min-width: 768px) {
    html {
        font-size: 15px;
    }
    
    body {
        padding-bottom: 0;
    }
    
    .main-container {
        max-width: 1200px;
        padding: var(--spacing-xl);
    }
    
    .navbar {
        padding: var(--spacing-md) var(--spacing-xl);
    }
    
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .navbar-brand i {
        font-size: 1.5rem;
    }
    
    .version-badge {
        display: inline-block;
    }
    
    .online-users {
        display: flex;
    }
    
    .user-avatar {
        width: 36px;
        height: 36px;
    }
    
    .btn-login {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
    
    .btn-login img {
        width: 18px;
        height: 18px;
    }
    
    .stats-container {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-lg);
    }
    
    .stat-card {
        padding: var(--spacing-xl);
    }
    
    .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 1.4rem;
    }
    
    .stat-value {
        font-size: 1.6rem;
    }
    
    .stat-label {
        font-size: 0.75rem;
    }
    
    .card-header {
        padding: var(--spacing-lg) var(--spacing-xl);
        font-size: 1rem;
    }
    
    .card-body {
        padding: var(--spacing-xl);
    }
    
    .chart-container {
        height: 320px;
    }
    
    .welcome-screen {
        padding: 60px var(--spacing-xl);
    }
    
    .welcome-icon {
        font-size: 4rem;
    }
    
    .welcome-title {
        font-size: 1.4rem;
    }
    
    .welcome-subtitle {
        font-size: 0.95rem;
    }
    
    .login-card {
        padding: 40px;
        max-width: 380px;
    }
    
    .login-screen .card {
        max-width: 600px;
    }
    
    .login-card .welcome-icon {
        font-size: 3.5rem;
    }
    
    .login-card h2 {
        font-size: 1.3rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-lg);
    }
    
    .feature-card {
        padding: var(--spacing-xl);
    }
    
    .feature-card i {
        font-size: 2rem;
    }
    
    .feature-card h5 {
        font-size: 0.95rem;
    }
    
    .activity-toast {
        bottom: 100px;
        right: var(--spacing-xl);
        left: auto;
        max-width: 320px;
    }
    
    .project-info h4 {
        font-size: 1.1rem;
    }
    
    .project-info p {
        font-size: 0.8rem;
    }
    
    .member-avatar {
        width: 40px;
        height: 40px;
    }
    
    .member-name {
        font-size: 0.9rem;
    }
    
    .member-email {
        font-size: 0.8rem;
    }
    
    .summary-table {
        font-size: 0.9rem;
    }
    
    .summary-table th {
        font-size: 0.85rem;
    }
    
    .hide-mobile {
        display: inline-block !important;
    }
    
    .show-mobile {
        display: none !important;
    }
    
    .bottom-nav {
        display: none;
    }
    
    .fab {
        display: none;
    }
}

/* ============================================
   Desktop Styles (min-width: 992px)
   ============================================ */

@media (min-width: 992px) {
    html {
        font-size: 16px;
    }
    
    .main-container {
        padding: var(--spacing-2xl);
    }
    
    .card:hover {
        transform: translateY(-2px);
    }
    
    .stat-card:hover {
        transform: translateY(-4px);
    }
    
    .btn:hover {
        transform: translateY(-1px);
    }
    
    .nav-tabs .nav-link {
        padding: 12px 20px;
        font-size: 0.85rem;
    }
    
    .modal-content {
        margin: 0 auto;
        max-width: 600px;
    }
    
    .modal-lg .modal-content {
        max-width: 800px;
    }
}

/* ============================================
   Large Desktop Styles (min-width: 1200px)
   ============================================ */

@media (min-width: 1200px) {
    .main-container {
        max-width: 1400px;
    }
    
    .chart-container {
        height: 360px;
    }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
    .navbar,
    .bottom-nav,
    .fab,
    .btn,
    .action-btn {
        display: none !important;
    }
    
    body {
        padding-bottom: 0;
    }
    
    .card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}