/**
 * 🏥 Hospital Queue System - Main Stylesheet
 * Responsive + PWA Ready
 */

/* ===== CSS Variables ===== */
:root {
    --primary: #3B82F6;
    --primary-dark: #2563EB;
    --secondary: #64748B;
    --accent: #06B6D4;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #0EA5E9;
    
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    
    --safe-area-inset-top: env(safe-area-inset-top, 0px);
    --safe-area-inset-bottom: env(safe-area-inset-bottom, 0px);
    --safe-area-inset-left: env(safe-area-inset-left, 0px);
    --safe-area-inset-right: env(safe-area-inset-right, 0px);
}

/* ===== Base Styles ===== */
* {
    font-family: 'Noto Sans Thai', -apple-system, BlinkMacSystemFont, sans-serif;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    padding-top: var(--safe-area-inset-top);
    padding-bottom: var(--safe-area-inset-bottom);
    padding-left: var(--safe-area-inset-left);
    padding-right: var(--safe-area-inset-right);
}

/* ===== Touch-Friendly ===== */
button, a, .btn, [role="button"] {
    min-height: 44px;
    min-width: 44px;
}

input, select, textarea {
    font-size: 16px; /* Prevent zoom on iOS */
}

/* ===== Responsive Typography ===== */
h1 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.25rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); }
p, span, div { font-size: clamp(0.875rem, 2vw, 1rem); }

/* ===== Mobile Navigation ===== */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
    z-index: 1000;
    padding: 8px 16px;
    padding-bottom: calc(8px + var(--safe-area-inset-bottom));
}

@media (max-width: 768px) {
    .mobile-nav {
        display: flex;
        justify-content: space-around;
    }
    
    .desktop-sidebar {
        display: none !important;
    }
    
    main {
        padding-bottom: 80px !important;
    }
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 8px 12px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.75rem;
    border-radius: 12px;
    transition: all 0.2s;
}

.mobile-nav-item.active,
.mobile-nav-item:hover {
    color: var(--primary);
    background: rgba(59, 130, 246, 0.1);
}

.mobile-nav-item i {
    width: 24px;
    height: 24px;
}

/* ===== Responsive Cards ===== */
.stat-card {
    padding: 1rem;
}

@media (min-width: 768px) {
    .stat-card {
        padding: 1.5rem;
    }
}

/* ===== Queue Number Display ===== */
.queue-number {
    font-size: clamp(2rem, 10vw, 6rem);
    font-weight: 700;
    line-height: 1;
}

.queue-number-small {
    font-size: clamp(1.5rem, 5vw, 3rem);
}

/* ===== Responsive Grid ===== */
.responsive-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .responsive-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

/* ===== Hide on Mobile/Desktop ===== */
.hide-mobile {
    display: none;
}

@media (min-width: 768px) {
    .hide-mobile {
        display: block;
    }
    .hide-desktop {
        display: none;
    }
}

/* ===== PWA Install Button ===== */
.pwa-install-btn {
    display: none;
    position: fixed;
    bottom: 100px;
    right: 20px;
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 50px;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
    cursor: pointer;
    z-index: 999;
    animation: bounce 2s infinite;
}

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

/* ===== Pull to Refresh Indicator ===== */
.ptr-indicator {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%) translateY(-100%);
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    border-radius: 0 0 20px 20px;
    z-index: 1001;
    transition: transform 0.3s;
}

.ptr-indicator.visible {
    transform: translateX(-50%) translateY(0);
}

/* ===== Animations ===== */
@keyframes slide-up {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(59, 130, 246, 0.3); }
    50% { box-shadow: 0 0 40px rgba(59, 130, 246, 0.6); }
}

.animate-slide-up {
    animation: slide-up 0.5s ease-out;
}

.animate-fade-in {
    animation: fade-in 0.3s ease-out;
}

.animate-pulse-glow {
    animation: pulse-glow 2s infinite;
}

/* ===== Loading Skeleton ===== */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 8px;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===== Toast Notifications ===== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

@media (max-width: 768px) {
    .toast-container {
        top: auto;
        bottom: 100px;
        left: 20px;
        right: 20px;
    }
}

.toast {
    padding: 12px 20px;
    border-radius: 12px;
    color: white;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    animation: slide-up 0.3s ease-out;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--error); }
.toast-warning { background: var(--warning); }
.toast-info { background: var(--info); }

/* ===== Landscape Mode for Queue Display ===== */
@media (orientation: landscape) and (max-height: 500px) {
    .queue-display-main {
        flex-direction: row;
    }
    
    .queue-display-current {
        width: 50%;
    }
    
    .queue-display-list {
        width: 50%;
    }
}

/* ===== Print Styles ===== */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        padding: 0;
        margin: 0;
    }
}

/* ===== Dark Mode Support ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #F9FAFB;
        --text-secondary: #D1D5DB;
        --text-muted: #9CA3AF;
        --bg-primary: #1F2937;
        --bg-secondary: #111827;
        --bg-tertiary: #374151;
    }
}