@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
    /* Modern Color Palette */
    --primary-color: #3b82f6; /* Modern Blue */
    --primary-dark: #1e40af;
    --primary-light: #93c5fd;
    --secondary-color: #0f172a; /* Rich Dark Blue */
    --accent-color: #10b981; /* Modern Teal */
    --accent-secondary: #f59e0b; /* Amber */
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --success-color: #10b981;
    
    /* Backgrounds */
    --background-primary: #fafafb;
    --background-secondary: #ffffff;
    --background-tertiary: #f8fafc;
    --background-dark: #0f172a;
    --background-glass: rgba(255, 255, 255, 0.8);
    
    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --text-inverse: #ffffff;
    
    /* Border & Shadow */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Typography */
    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-family-heading: 'Space Grotesk', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* 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: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease-out;
    --transition-base: 250ms ease-out;
    --transition-slow: 350ms ease-out;
    --transition-bounce: 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-index layers */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
}

/* Dark mode variables */
@media (prefers-color-scheme: dark) {
    :root {
        --background-primary: #0f172a;
        --background-secondary: #1e293b;
        --background-tertiary: #334155;
        --background-glass: rgba(30, 41, 59, 0.8);
        --text-primary: #f8fafc;
        --text-secondary: #cbd5e1;
        --text-tertiary: #94a3b8;
        --border-color: #334155;
        --border-light: #1e293b;
    }
}

/* Reset and Base Styles */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    font-feature-settings: 'cv03', 'cv04', 'cv11';
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background-primary);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-weight: 400;
    overflow-x: hidden;
}

/* Container System */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

@media (max-width: 640px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-lg) 0;
    letter-spacing: -0.025em;
}

h1 {
    font-size: clamp(2rem, 4vw, var(--font-size-4xl));
    font-weight: 700;
}

h2 {
    font-size: clamp(1.5rem, 3vw, var(--font-size-3xl));
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

h3 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
}

h4 {
    font-size: var(--font-size-xl);
    font-weight: 500;
}

p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-base);
    position: relative;
}

a:hover {
    color: var(--primary-dark);
}

a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Header - App-like Navigation */
.main-header {
    background: var(--background-glass);
    backdrop-filter: blur(12px) saturate(180%);
    border: 1px solid var(--border-light);
    padding: var(--spacing-md) var(--spacing-xl);
    margin: var(--spacing-md);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    position: sticky;
    top: var(--spacing-md);
    z-index: var(--z-sticky);
    transition: var(--transition-base);
}

.main-header:hover {
    box-shadow: var(--shadow-xl);
}

.main-header .logo {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.main-nav a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    position: relative;
    transition: var(--transition-base);
}

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

.main-nav a::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-full);
    padding: 1px;
    background: linear-gradient(135deg, var(--primary-color), transparent);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: xor;
    opacity: 0;
    transition: var(--transition-base);
}

.main-nav a:hover::before,
.main-nav a.active::before {
    opacity: 1;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-info a {
    color: var(--danger-color);
    font-weight: 600;
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.user-info a:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* Modern Card System */
.card,
.customer-card {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0;
    transition: var(--transition-base);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.card:hover::before {
    opacity: 1;
}

/* Enhanced Button System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    line-height: 1;
    color: var(--text-inverse);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    min-height: 44px; /* Touch target */
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
    opacity: 0;
    transition: var(--transition-base);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn:hover::before {
    opacity: 1;
}

.btn:active {
    transform: translateY(0);
}

.btn.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color), #1e293b);
    box-shadow: var(--shadow-md);
}

.btn.btn-secondary {
    background: var(--background-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.btn.btn-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
}

.btn.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #dc2626);
}

/* Modern Form Elements */
.form-group,
.smart-form {
    margin-bottom: var(--spacing-lg);
}

.form-group label,
.smart-form label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.smart-form input,
.smart-form select,
.smart-form textarea,
.form-group input,
input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="search"],
input[type="tel"],
input[type="url"] {
    width: 100%;
    padding: var(--spacing-md);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    box-shadow: var(--shadow-sm);
    min-height: 44px;
}

input[type="password"] {
    letter-spacing: 0.125em;
}

.smart-form input:focus,
.smart-form select:focus,
.smart-form textarea:focus,
.form-group input:focus,
input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background: var(--background-secondary);
}

/* Dashboard Header */
.dashboard-header {
    background: linear-gradient(135deg, var(--secondary-color), #1e293b);
    color: var(--text-inverse);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    position: relative;
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}

.dashboard-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.1;
}

.dashboard-header h1 {
    color: var(--text-inverse);
    margin: 0;
    position: relative;
    z-index: 1;
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    border: 1px solid transparent;
    transition: var(--transition-base);
}

.status-Pending-Pickup {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
    border-color: rgba(245, 158, 11, 0.2);
}

.status-Picked-Up---Awaiting-Confirmation {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
    border-color: rgba(59, 130, 246, 0.2);
}

.status-Confirmed-by-Customer,
.status-Processed-by-Admin {
    background: rgba(99, 102, 241, 0.1);
    color: #6366f1;
    border-color: rgba(99, 102, 241, 0.2);
}

.status-Completed,
.status-Customer-Confirmed {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border-color: rgba(16, 185, 129, 0.2);
}

.status-Cancelled,
.status-Returned {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border-color: rgba(239, 68, 68, 0.2);
}

/* Enhanced Tables */
.table-wrapper {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    margin: var(--spacing-lg) 0;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    background: var(--background-tertiary);
    padding: var(--spacing-md) var(--spacing-lg);
    font-family: var(--font-family-heading);
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-light);
}

.data-table tbody tr {
    transition: var(--transition-fast);
}

.data-table tbody tr:hover {
    background: rgba(59, 130, 246, 0.02);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* Grid Systems */
.dashboard-grid,
.delivery-columns,
.customer-kpi-grid,
.grid-container {
    display: grid;
    gap: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

.dashboard-grid,
.customer-kpi-grid,
.grid-container {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.delivery-columns {
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .delivery-columns {
        grid-template-columns: 2fr 1fr;
    }
}

/* Dispatch Grid */
.dispatch-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.dispatch-column {
    background: var(--background-tertiary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
}

.task-card {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--primary-color);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.task-card:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--accent-color);
}

/* Toast Notifications */
.toast-notification {
    position: fixed;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    background: var(--background-secondary);
    color: var(--text-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--border-color);
    transform: translateX(calc(100% + var(--spacing-xl)));
    transition: var(--transition-bounce);
    z-index: var(--z-toast);
    max-width: 400px;
    backdrop-filter: blur(12px);
}

.toast-notification.show {
    transform: translateX(0);
}

.toast-notification.success {
    border-left: 3px solid var(--success-color);
}

.toast-notification.error {
    border-left: 3px solid var(--danger-color);
}

/* Chart Containers */
.chart-container-wrapper {
    margin-top: var(--spacing-xl);
    background: var(--background-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.chart-panel {
    position: relative;
    height: 400px;
    width: 100%;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .main-header {
        margin: var(--spacing-sm);
        padding: var(--spacing-md);
        border-radius: var(--radius-xl);
    }
    
    .main-nav {
        order: 1;
        width: 100%;
        justify-content: center;
        margin-top: var(--spacing-sm);
    }
}

@media (max-width: 768px) {
    .dashboard-grid,
    .delivery-columns {
        grid-template-columns: 1fr;
    }
    
    .dispatch-grid {
        grid-template-columns: 1fr;
    }
    
    .toast-notification {
        left: var(--spacing-md);
        right: var(--spacing-md);
        top: var(--spacing-md);
        transform: translateY(-200%);
    }
    
    .toast-notification.show {
        transform: translateY(0);
    }
}

@media (max-width: 640px) {
    .main-header {
        margin: 0;
        border-radius: 0;
        position: relative;
        top: 0;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .card,
    .customer-card {
        padding: var(--spacing-lg);
        margin-top: var(--spacing-md);
    }
    
    .table-wrapper {
        border-radius: var(--radius-lg);
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.3);
    }
}

/* Print styles */
@media print {
    .main-header,
    .toast-notification {
        display: none;
    }
    
    .card,
    .customer-card {
        box-shadow: none;
        border: 1px solid #000;
    }
}

/* Utilities */
.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;
}

/* --- WhatsApp Bot App Styles --- */
.chat-app-container {
    max-width: 800px;
    margin: 40px auto;
    height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    border-radius: var(--border-radius);
    overflow: hidden;
}
.chat-header {
    background-color: #075e54;
    color: white;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}
.chat-header img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}
.chat-header .info { line-height: 1.2; }
.chat-header .info strong { font-size: 1.1em; }
.chat-header .info span { font-size: 0.8em; opacity: 0.8; }

.chat-messages {
    flex-grow: 1;
    background-color: #e5ddd5;
    background-image: url('https://user-images.githubusercontent.com/15075759/28719144-86dc0f70-73b1-11e7-911d-60d70fcded21.png'); /* Classic WhatsApp background */
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}
.message-bubble {
    max-width: 70%;
    padding: 10px 15px;
    border-radius: 8px;
    margin-bottom: 10px;
    line-height: 1.4;
    position: relative;
    animation: popIn 0.3s ease-out;
}
.message-bubble.bot {
    background-color: #fff;
    align-self: flex-start;
    border-top-left-radius: 0;
}
.message-bubble.user {
    background-color: #dcf8c6;
    align-self: flex-end;
    border-top-right-radius: 0;
}
.message-bubble .timestamp {
    font-size: 0.7em;
    color: #999;
    margin-top: 5px;
    text-align: right;
}
@keyframes popIn {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.chat-input-area {
    background-color: #f0f0f0;
    padding: 10px;
    display: flex;
    gap: 10px;
}
.chat-input-area input {
    flex-grow: 1;
    border: 1px solid #ccc;
    border-radius: 20px;
    padding: 10px 15px;
    font-size: 1em;
}
.chat-input-area button {
    background-color: #128c7e;
    color: white;
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    font-size: 1.2em;
    cursor: pointer;
}

/* Login overlay for bot */
.bot-login-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}