/** * CRITICAL-MOBILE.CSS * Critical mobile styles for above-the-fold content * * SIZE TARGET: < 14KB (inline in ) * LOAD: Synchronous, inline for instant rendering * SCOPE: Essential mobile layout, touch targets, typography * * VERSION: 1.0.0 - Mobile UI Refactoring Phase 1 * LAST UPDATED: 2025-10-27 */ /* ===== CSS CUSTOM PROPERTIES (DESIGN TOKENS) ===== */ :root { /* Touch Target Standards (Apple/Google Guidelines) */ --touch-min: 44px; /* Minimum touch target */ --touch-optimal: 48px; /* Optimal touch target */ --touch-large: 56px; /* Large touch target (primary actions) */ --touch-fab: 56px; /* Floating action button */ /* Color System */ --primary-color: #0071e3; --primary-dark: #0056b3; --primary-light: #66b3ff; --success-color: #10b981; --warning-color: #f59e0b; --danger-color: #ef4444; --info-color: #3b82f6; /* Grayscale */ --gray-50: #f9fafb; --gray-100: #f3f4f6; --gray-200: #e5e7eb; --gray-300: #d1d5db; --gray-400: #9ca3af; --gray-500: #6b7280; --gray-600: #4b5563; --gray-700: #374151; --gray-800: #1f2937; --gray-900: #111827; /* Text Colors */ --text-primary: #1a1a1a; --text-secondary: #6b7280; --text-muted: #9ca3af; --text-inverse: #ffffff; /* Background Colors */ --bg-primary: #ffffff; --bg-secondary: #f8f9fa; --bg-tertiary: #f3f4f6; /* Spacing (8px Grid System) */ --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px; --space-5: 20px; --space-6: 24px; --space-8: 32px; --space-10: 40px; --space-12: 48px; /* Typography Scale */ --text-xs: 0.75rem; /* 12px */ --text-sm: 0.875rem; /* 14px */ --text-base: 1rem; /* 16px */ --text-lg: 1.125rem; /* 18px */ --text-xl: 1.25rem; /* 20px */ --text-2xl: 1.5rem; /* 24px */ /* Border Radius */ --radius-sm: 6px; --radius-md: 8px; --radius-lg: 12px; --radius-xl: 16px; --radius-full: 9999px; /* Shadows */ --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05); --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1); --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1); --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1); /* Z-Index Layers */ --z-base: 1; --z-dropdown: 1000; --z-sticky: 1020; --z-fixed: 1030; --z-modal-backdrop: 1040; --z-modal: 1050; --z-toast: 9999; /* Transitions */ --transition-fast: 150ms ease-out; --transition-normal: 300ms ease-out; --transition-slow: 500ms ease-out; } /* ===== RESET & BASE (MOBILE-FIRST) ===== */ *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; } html { -webkit-text-size-adjust: 100%; -webkit-tap-highlight-color: transparent; scroll-behavior: smooth; font-size: 16px; } body { font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'SF Pro Display', 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif; background-color: var(--bg-secondary); color: var(--text-primary); line-height: 1.6; font-size: var(--text-base); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; overscroll-behavior-y: none; min-height: 100vh; min-height: -webkit-fill-available; } /* ===== GLOBAL TOUCH TARGET ENFORCEMENT ===== */ button, a[role="button"], .btn, .nav-item, input[type="button"], input[type="submit"], input[type="reset"] { min-height: var(--touch-min); min-width: var(--touch-min); touch-action: manipulation; -webkit-tap-highlight-color: transparent; } /* Optimal touch targets for important actions */ .btn-primary, .btn-success, .btn-danger, .fab, .mobile-action-btn { min-height: var(--touch-optimal); min-width: var(--touch-optimal); } /* Large touch targets for FAB and primary mobile actions */ .fab, .mobile-fab, .primary-mobile-action { min-height: var(--touch-large); min-width: var(--touch-large); } /* ===== FORM INPUTS (TOUCH-OPTIMIZED) ===== */ input[type="text"], input[type="email"], input[type="password"], input[type="tel"], input[type="number"], input[type="search"], input[type="url"], input[type="date"], input[type="time"], input[type="datetime-local"], select, textarea { min-height: var(--touch-optimal); padding: 0.75rem 1rem; font-size: 16px; /* Prevents iOS zoom */ border: 2px solid var(--gray-300); border-radius: var(--radius-md); background: var(--bg-primary); color: var(--text-primary); transition: all var(--transition-fast); -webkit-appearance: none; appearance: none; } input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.1); } /* Select dropdowns with custom arrow */ select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23374151' d='M6 9L1 4h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; background-size: 12px; padding-right: 2.5rem; } /* Textarea specific */ textarea { min-height: 100px; resize: vertical; line-height: 1.5; } /* ===== MOBILE LAYOUT SYSTEM ===== */ .app-container { display: flex; flex-direction: column; min-height: 100vh; min-height: -webkit-fill-available; overflow-x: hidden; } .content-area { flex: 1; padding: var(--space-4); padding-top: calc(60px + var(--space-4)); /* Mobile header height + padding */ } /* ===== MOBILE HEADER ===== */ .mobile-header { position: fixed; top: 0; left: 0; right: 0; height: 60px; background: var(--bg-primary); border-bottom: 1px solid var(--gray-200); z-index: var(--z-fixed); display: flex; align-items: center; justify-content: space-between; padding: 0 var(--space-4); box-shadow: var(--shadow-sm); } .mobile-header-title { font-size: var(--text-lg); font-weight: 600; color: var(--text-primary); } .mobile-menu-toggle { min-height: var(--touch-min); min-width: var(--touch-min); background: none; border: none; padding: var(--space-2); cursor: pointer; display: flex; align-items: center; justify-content: center; } /* Hamburger Icon */ .mobile-nav-icon { display: flex; flex-direction: column; width: 24px; height: 18px; justify-content: space-between; } .mobile-nav-icon span { display: block; height: 2px; background: var(--gray-700); border-radius: 1px; transition: all var(--transition-fast); } .mobile-nav-icon.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); } .mobile-nav-icon.active span:nth-child(2) { opacity: 0; } .mobile-nav-icon.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); } /* ===== MOBILE SIDEBAR ===== */ .mobile-sidebar { position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: var(--z-modal); pointer-events: none; opacity: 0; transition: opacity var(--transition-normal); } .mobile-sidebar.active { opacity: 1; pointer-events: all; } .mobile-sidebar-backdrop { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0, 0, 0, 0.5); } .mobile-sidebar-content { position: absolute; top: 0; left: 0; width: 280px; max-width: 85vw; height: 100%; background: var(--bg-primary); transform: translateX(-100%); transition: transform var(--transition-normal); overflow-y: auto; -webkit-overflow-scrolling: touch; box-shadow: var(--shadow-xl); } .mobile-sidebar.active .mobile-sidebar-content { transform: translateX(0); } /* ===== BUTTONS (TOUCH-OPTIMIZED) ===== */ .btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); min-height: var(--touch-min); padding: 0.75rem 1.25rem; font-size: var(--text-base); font-weight: 600; border-radius: var(--radius-md); border: none; cursor: pointer; transition: all var(--transition-fast); text-decoration: none; user-select: none; -webkit-user-select: none; touch-action: manipulation; } .btn-primary { background: var(--primary-color); color: var(--text-inverse); min-height: var(--touch-optimal); } .btn-primary:active { background: var(--primary-dark); transform: scale(0.98); } .btn-secondary { background: var(--gray-100); color: var(--text-primary); border: 1px solid var(--gray-300); } .btn-secondary:active { background: var(--gray-200); transform: scale(0.98); } .btn-success { background: var(--success-color); color: var(--text-inverse); min-height: var(--touch-optimal); } .btn-danger { background: var(--danger-color); color: var(--text-inverse); min-height: var(--touch-optimal); } .btn-outline { background: transparent; border: 2px solid var(--primary-color); color: var(--primary-color); } /* Icon-only buttons */ .btn-icon { padding: var(--space-2); min-width: var(--touch-min); min-height: var(--touch-min); } /* ===== MODAL SYSTEM (BOTTOM SHEET) ===== */ .modal { position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: var(--z-modal); display: none; align-items: center; justify-content: center; padding: 0; } .modal.active { display: flex; align-items: flex-end; /* Bottom sheet on mobile */ } .modal-backdrop { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0, 0, 0, 0.5); z-index: var(--z-modal-backdrop); } .modal-content { position: relative; z-index: var(--z-modal); background: var(--bg-primary); border-radius: 20px 20px 0 0; max-height: 92vh; width: 100%; animation: slideUpModal 0.3s ease-out; box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.15); overflow: hidden; display: flex; flex-direction: column; } @keyframes slideUpModal { from { transform: translateY(100%); } to { transform: translateY(0); } } .modal-header { position: sticky; top: 0; background: var(--bg-primary); z-index: 10; padding: var(--space-4) var(--space-6); border-bottom: 2px solid var(--gray-100); } /* Modal drag handle */ .modal-header::before { content: ''; position: absolute; top: 8px; left: 50%; transform: translateX(-50%); width: 40px; height: 4px; background: var(--gray-300); border-radius: 2px; } .modal-title { font-size: var(--text-lg); font-weight: 600; padding-top: var(--space-3); color: var(--text-primary); } .modal-body { flex: 1; padding: var(--space-6); overflow-y: auto; -webkit-overflow-scrolling: touch; } .modal-footer { position: sticky; bottom: 0; background: var(--bg-primary); border-top: 2px solid var(--gray-100); padding: var(--space-4) var(--space-6); padding-bottom: calc(var(--space-4) + env(safe-area-inset-bottom)); display: flex; flex-direction: column; gap: var(--space-3); } .modal-footer .btn { width: 100%; min-height: 52px; font-size: var(--text-base); font-weight: 600; } /* ===== SAFE AREA INSETS (iOS NOTCH) ===== */ @supports (padding: max(0px)) { .modal-body { padding-left: max(var(--space-6), env(safe-area-inset-left)); padding-right: max(var(--space-6), env(safe-area-inset-right)); } .modal-footer { padding-left: max(var(--space-6), env(safe-area-inset-left)); padding-right: max(var(--space-6), env(safe-area-inset-right)); } .content-area { padding-left: max(var(--space-4), env(safe-area-inset-left)); padding-right: max(var(--space-4), env(safe-area-inset-right)); padding-bottom: max(var(--space-4), env(safe-area-inset-bottom)); } } /* ===== ACCESSIBILITY ===== */ .visually-hidden, .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; } /* Focus indicators for keyboard navigation */ *:focus-visible { outline: 3px solid var(--primary-color); outline-offset: 2px; } /* High contrast mode support */ @media (prefers-contrast: high) { button, a, input, select, textarea { border-width: 2px; } } /* Reduced motion support */ @media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; } } /* ===== DESKTOP HIDE (MOBILE-ONLY ELEMENTS) ===== */ @media (min-width: 769px) { .mobile-header, .mobile-sidebar, .mobile-only { display: none !important; } .content-area { padding-top: var(--space-4); } } /* ===== UTILITY CLASSES ===== */ .text-center { text-align: center; } .text-left { text-align: left; } .text-right { text-align: right; } .fw-normal { font-weight: 400; } .fw-medium { font-weight: 500; } .fw-semibold { font-weight: 600; } .fw-bold { font-weight: 700; } .text-primary { color: var(--primary-color); } .text-success { color: var(--success-color); } .text-danger { color: var(--danger-color); } .text-muted { color: var(--text-muted); } .d-none { display: none; } .d-block { display: block; } .d-flex { display: flex; } .d-inline-flex { display: inline-flex; } @media (max-width: 768px) { .d-mobile-none { display: none !important; } .d-mobile-block { display: block !important; } } /* ===== LOADING SPINNER ===== */ .spinner { display: inline-block; width: 20px; height: 20px; border: 3px solid rgba(255, 255, 255, 0.3); border-top-color: white; border-radius: 50%; animation: spin 0.6s linear infinite; } @keyframes spin { to { transform: rotate(360deg); } }