/**
 * NearClean - Modern Design System v2.0
 * Fresh, vibrant theme with emerald green & violet purple
 * WCAG AA compliant (4.5:1 contrast ratio for normal text, 3:1 for large text)
 * 
 * Color Philosophy: Nature meets Technology
 * - Emerald Green: Growth, trust, eco-friendly cleaning
 * - Violet Purple: Premium, innovation, sophistication
 */

/* ============================================
   DESIGN TOKENS - COLOR SYSTEM
   Modern Green/Purple Palette
   ============================================ */

:root {
    /* === PRIMARY BRAND COLORS - EMERALD GREEN === */
    /* Fresh, modern green - represents clean, eco-friendly, growth */
    --color-primary-50: #ecfdf5;
    --color-primary-100: #d1fae5;
    --color-primary-200: #a7f3d0;
    --color-primary-300: #6ee7b7;
    --color-primary-400: #34d399;
    --color-primary-500: #10b981;  /* Main primary - 4.5:1 contrast on white */
    --color-primary-600: #059669;  /* Hover state */
    --color-primary-700: #047857;  /* Active state */
    --color-primary-800: #065f46;
    --color-primary-900: #064e3b;
    
    /* === SECONDARY COLORS - VIOLET PURPLE === */
    /* Premium, sophisticated accent */
    --color-secondary-50: #faf5ff;
    --color-secondary-100: #f3e8ff;
    --color-secondary-200: #e9d5ff;
    --color-secondary-300: #d8b4fe;
    --color-secondary-400: #c084fc;
    --color-secondary-500: #a855f7;  /* Main accent */
    --color-secondary-600: #9333ea;  /* Hover */
    --color-secondary-700: #7c3aed;  /* Active */
    --color-secondary-800: #6b21a8;
    --color-secondary-900: #581c87;
    
    /* === ACCENT COLOR - TEAL === */
    /* Bridge between green and purple */
    --color-accent-50: #f0fdfa;
    --color-accent-100: #ccfbf1;
    --color-accent-200: #99f6e4;
    --color-accent-300: #5eead4;
    --color-accent-400: #2dd4bf;
    --color-accent-500: #14b8a6;
    --color-accent-600: #0d9488;
    --color-accent-700: #0f766e;
    
    /* === SEMANTIC COLORS === */
    /* Success - Keep green but slightly different from primary */
    --color-success-50: #f0fdf4;
    --color-success-100: #dcfce7;
    --color-success-200: #bbf7d0;
    --color-success-300: #86efac;
    --color-success-400: #4ade80;
    --color-success-500: #22c55e;  /* 4.5:1 contrast */
    --color-success-600: #16a34a;
    --color-success-700: #15803d;
    
    /* Warning - Warm amber/orange */
    --color-warning-50: #fff7ed;
    --color-warning-100: #ffedd5;
    --color-warning-200: #fed7aa;
    --color-warning-300: #fdba74;
    --color-warning-400: #fb923c;
    --color-warning-500: #f97316;  /* 4.5:1 contrast */
    --color-warning-600: #ea580c;
    --color-warning-700: #c2410c;
    
    /* Error/Danger - Rose red */
    --color-error-50: #fff1f2;
    --color-error-100: #ffe4e6;
    --color-error-200: #fecdd3;
    --color-error-300: #fda4af;
    --color-error-400: #fb7185;
    --color-error-500: #f43f5e;  /* 4.5:1 contrast */
    --color-error-600: #e11d48;
    --color-error-700: #be123c;
    
    /* Info - Soft violet */
    --color-info-50: #faf5ff;
    --color-info-100: #f3e8ff;
    --color-info-200: #e9d5ff;
    --color-info-300: #d8b4fe;
    --color-info-400: #c084fc;
    --color-info-500: #a855f7;  /* 4.5:1 contrast */
    --color-info-600: #9333ea;
    --color-info-700: #7c3aed;
    
    /* === NEUTRAL GRAYS - Warm slate with subtle purple undertone === */
    --color-gray-50: #fafafa;
    --color-gray-100: #f4f4f5;
    --color-gray-200: #e4e4e7;
    --color-gray-300: #d4d4d8;
    --color-gray-400: #a1a1aa;
    --color-gray-500: #71717a;
    --color-gray-600: #52525b;  /* 4.5:1 contrast */
    --color-gray-700: #3f3f46;
    --color-gray-800: #27272a;
    --color-gray-900: #18181b;
    
    --color-white: #ffffff;
    --color-black: #09090b;
    
    /* === BACKGROUND COLORS === */
    /* Modern, warm backgrounds - subtle warmth, not pure white */
    --bg-primary: #fafafa;           /* Warm off-white */
    --bg-secondary: #f4f4f5;         /* Subtle warm gray */
    --bg-tertiary: #e4e4e7;          /* Slightly darker */
    --bg-accent: #ecfdf5;            /* Subtle green tint for highlights */
    --bg-accent-purple: #faf5ff;     /* Subtle purple tint */
    --bg-dark: #18181b;              /* Rich dark */
    --bg-card: #ffffff;
    --bg-card-hover: #fafafa;
    --bg-gradient: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-secondary-600) 100%);
    --bg-gradient-subtle: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-secondary-50) 100%);
    
    /* === TEXT COLORS === */
    --text-primary: #18181b;          /* Rich dark - 4.5:1 contrast */
    --text-secondary: #3f3f46;        /* Warm gray - 4.5:1 contrast */
    --text-tertiary: #52525b;         /* Medium gray */
    --text-muted: #a1a1aa;            /* Muted text */
    --text-inverse: #ffffff;          /* White text for dark backgrounds */
    --text-link: var(--color-primary-600);
    --text-link-hover: var(--color-primary-700);
    --text-accent: var(--color-secondary-600);
    
    /* === BORDER COLORS === */
    --border-light: #e4e4e7;
    --border-medium: #d4d4d8;
    --border-dark: #a1a1aa;
    --border-focus: var(--color-primary-500);
    --border-accent: var(--color-secondary-400);
    
    /* === SHADOWS - Softer, more modern === */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.07), 0 1px 2px -1px rgba(0, 0, 0, 0.07);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.08);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.2);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.04);
    
    /* Colored shadows for interactive elements - green & purple */
    --shadow-primary: 0 4px 14px 0 rgba(16, 185, 129, 0.3);
    --shadow-secondary: 0 4px 14px 0 rgba(168, 85, 247, 0.25);
    --shadow-success: 0 4px 14px 0 rgba(34, 197, 94, 0.25);
    --shadow-error: 0 4px 14px 0 rgba(244, 63, 94, 0.25);
    
    /* === TYPOGRAPHY - Modern, distinctive fonts === */
    --font-family-base: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-family-heading: 'Outfit', 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'SF Mono', 'Monaco', 'Consolas', monospace;
    
    /* Font Sizes */
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */
    
    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;
    
    /* === SPACING === */
    --spacing-0: 0;
    --spacing-1: 0.25rem;   /* 4px */
    --spacing-2: 0.5rem;    /* 8px */
    --spacing-3: 0.75rem;   /* 12px */
    --spacing-4: 1rem;      /* 16px */
    --spacing-5: 1.25rem;   /* 20px */
    --spacing-6: 1.5rem;    /* 24px */
    --spacing-8: 2rem;      /* 32px */
    --spacing-10: 2.5rem;   /* 40px */
    --spacing-12: 3rem;     /* 48px */
    --spacing-16: 4rem;     /* 64px */
    --spacing-20: 5rem;     /* 80px */
    --spacing-24: 6rem;     /* 96px */
    
    /* === BORDERS === */
    --border-width-0: 0;
    --border-width-1: 1px;
    --border-width-2: 2px;
    --border-width-4: 4px;
    
    /* Border Radius */
    --radius-none: 0;
    --radius-sm: 0.25rem;    /* 4px */
    --radius-md: 0.5rem;    /* 8px */
    --radius-lg: 0.75rem;   /* 12px */
    --radius-xl: 1rem;      /* 16px */
    --radius-2xl: 1.5rem;   /* 24px */
    --radius-full: 9999px;
    
    /* === TRANSITIONS === */
    --transition-fast: 150ms;
    --transition-base: 200ms;
    --transition-slow: 300ms;
    --transition-slower: 500ms;
    --transition-timing: cubic-bezier(0.4, 0, 0.2, 1);
    
    --transition-all: all var(--transition-base) var(--transition-timing);
    --transition-colors: color var(--transition-base) var(--transition-timing),
                        background-color var(--transition-base) var(--transition-timing),
                        border-color var(--transition-base) var(--transition-timing);
    --transition-transform: transform var(--transition-base) var(--transition-timing);
    
    /* === Z-INDEX === */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-loading: 9999;
    
    /* === COMPONENT SPECIFIC === */
    /* Buttons */
    --btn-padding-x: var(--spacing-4);
    --btn-padding-y: var(--spacing-2);
    --btn-font-size: var(--font-size-base);
    --btn-border-radius: var(--radius-md);
    --btn-font-weight: var(--font-weight-medium);
    
    /* Forms */
    --input-padding-x: var(--spacing-3);
    --input-padding-y: var(--spacing-2);
    --input-font-size: var(--font-size-base);
    --input-border-radius: var(--radius-md);
    --input-border-width: var(--border-width-2);
    --input-bg: var(--bg-primary);
    --input-border-color: var(--border-medium);
    --input-focus-border-color: var(--color-primary-500);
    
    /* Cards */
    --card-padding: var(--spacing-6);
    --card-border-radius: var(--radius-lg);
    --card-shadow: var(--shadow-md);
    --card-border-width: var(--border-width-1);
    --card-border-color: var(--border-light);
    
    /* Modals */
    --modal-padding: var(--spacing-6);
    --modal-border-radius: var(--radius-xl);
    --modal-shadow: var(--shadow-2xl);
    --modal-backdrop-bg: rgba(15, 23, 42, 0.5);
    
    /* Alerts */
    --alert-padding-x: var(--spacing-4);
    --alert-padding-y: var(--spacing-3);
    --alert-border-radius: var(--radius-md);
    --alert-border-width: var(--border-width-1);
}

/* ============================================
   BASE STYLES
   ============================================ */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body,
.nc-body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background: var(--bg-secondary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* === MODERN NAVBAR === */
.nc-navbar {
    background: var(--color-white) !important;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-3) 0;
}

.nc-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-family: var(--font-family-heading);
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--text-primary) !important;
    text-decoration: none;
}

.nc-brand:hover {
    color: var(--color-primary-600) !important;
}

.nc-logo-icon {
    font-size: 1.5rem;
}

.nc-logo-text {
    background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-secondary-600) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nc-navbar .nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    padding: var(--spacing-2) var(--spacing-4) !important;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.nc-navbar .nav-link:hover {
    color: var(--color-primary-600) !important;
    background: var(--bg-accent);
}

.nc-navbar .nav-link.active {
    color: var(--color-primary-600) !important;
    background: var(--bg-accent);
}

/* Modern dropdown styling */
.nc-navbar .dropdown-menu {
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-2);
}

.nc-navbar .dropdown-item {
    border-radius: var(--radius-md);
    padding: var(--spacing-2) var(--spacing-4);
    font-weight: 500;
}

.nc-navbar .dropdown-item:hover {
    background: var(--bg-accent);
    color: var(--color-primary-600);
}
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    padding-bottom: var(--spacing-8);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    margin-top: 0;
    color: var(--text-primary);
}

h1 { font-size: var(--font-size-4xl); margin-bottom: var(--spacing-6); }
h2 { font-size: var(--font-size-3xl); margin-bottom: var(--spacing-5); }
h3 { font-size: var(--font-size-2xl); margin-bottom: var(--spacing-4); }
h4 { font-size: var(--font-size-xl); margin-bottom: var(--spacing-3); }
h5 { font-size: var(--font-size-lg); margin-bottom: var(--spacing-2); }
h6 { font-size: var(--font-size-base); margin-bottom: var(--spacing-2); }

p {
    margin-top: 0;
    margin-bottom: var(--spacing-4);
    color: var(--text-secondary);
}

a {
    color: var(--text-link);
    text-decoration: none;
    transition: var(--transition-colors);
}

a:hover {
    color: var(--text-link-hover);
    text-decoration: underline;
}

a:focus {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

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

/* Selection */
::selection {
    background-color: var(--color-primary-200);
    color: var(--text-primary);
}

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    background-color: var(--bg-primary) !important;
    padding: var(--spacing-3) 0 !important;
    margin-bottom: 0 !important;
    box-shadow: var(--shadow-sm);
    border-bottom: var(--border-width-1) solid var(--border-light);
}

.navbar .container {
    max-width: 1400px;
}

.navbar-brand {
    font-weight: var(--font-weight-bold) !important;
    font-size: var(--font-size-xl) !important;
    color: var(--color-primary-600) !important;
    transition: var(--transition-all);
}

.navbar-brand:hover {
    color: var(--color-primary-700) !important;
    transform: scale(1.05);
    text-decoration: none;
}

.nav-link {
    font-weight: var(--font-weight-medium) !important;
    padding: var(--spacing-2) var(--spacing-4) !important;
    color: var(--text-secondary) !important;
    transition: var(--transition-all);
    border-radius: var(--radius-md);
}

.nav-link:hover {
    background-color: var(--color-primary-50);
    color: var(--color-primary-600) !important;
    text-decoration: none;
}

.nav-link.active {
    color: var(--color-primary-600) !important;
    font-weight: var(--font-weight-semibold) !important;
    background-color: var(--color-primary-50);
}

.navbar-toggler {
    border: none;
    padding: var(--spacing-2);
    border-radius: var(--radius-md);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 2px var(--color-primary-500);
    outline: none;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--btn-padding-y) var(--btn-padding-x);
    font-size: var(--btn-font-size);
    font-weight: var(--btn-font-weight);
    line-height: var(--line-height-tight);
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: var(--border-width-1) solid transparent;
    border-radius: var(--btn-border-radius);
    transition: var(--transition-all);
    font-family: var(--font-family-base);
}

.btn:focus {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

.btn:disabled,
.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* Button Variants */
.btn-primary {
    background-color: var(--color-primary-600);
    color: var(--color-white);
    border-color: var(--color-primary-600);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-700);
    border-color: var(--color-primary-700);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
    text-decoration: none;
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background-color: var(--color-secondary-600);
    color: var(--color-white);
    border-color: var(--color-secondary-600);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-secondary-700);
    border-color: var(--color-secondary-700);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
    text-decoration: none;
}

/* Gradient button - premium look */
.btn-gradient {
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-secondary-600) 100%);
    color: var(--color-white);
    border: none;
    box-shadow: var(--shadow-md);
}

.btn-gradient:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-secondary-700) 100%);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-success {
    background-color: var(--color-success-600);
    color: var(--color-white);
    border-color: var(--color-success-600);
}

.btn-success:hover:not(:disabled) {
    background-color: var(--color-success-700);
    border-color: var(--color-success-700);
    text-decoration: none;
}

.btn-danger {
    background-color: var(--color-error-600);
    color: var(--color-white);
    border-color: var(--color-error-600);
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--color-error-700);
    border-color: var(--color-error-700);
    text-decoration: none;
}

.btn-warning {
    background-color: var(--color-warning-500);
    color: var(--text-primary);
    border-color: var(--color-warning-500);
}

.btn-warning:hover:not(:disabled) {
    background-color: var(--color-warning-600);
    border-color: var(--color-warning-600);
    text-decoration: none;
}

.btn-info {
    background-color: var(--color-info-600);
    color: var(--color-white);
    border-color: var(--color-info-600);
}

.btn-info:hover:not(:disabled) {
    background-color: var(--color-info-700);
    border-color: var(--color-info-700);
    text-decoration: none;
}

/* Outline Buttons */
.btn-outline-primary {
    background-color: transparent;
    color: var(--color-primary-600);
    border-color: var(--color-primary-600);
}

.btn-outline-primary:hover:not(:disabled) {
    background-color: var(--color-primary-600);
    color: var(--color-white);
    text-decoration: none;
}

.btn-outline-secondary {
    background-color: transparent;
    color: var(--color-gray-600);
    border-color: var(--color-gray-600);
}

.btn-outline-secondary:hover:not(:disabled) {
    background-color: var(--color-gray-600);
    color: var(--color-white);
    text-decoration: none;
}

/* Link Buttons */
.btn-link {
    background-color: transparent;
    color: var(--color-primary-600);
    border-color: transparent;
    padding: var(--spacing-1) var(--spacing-2);
}

.btn-link:hover:not(:disabled) {
    color: var(--color-primary-700);
    background-color: var(--color-gray-100);
    text-decoration: none;
}

/* Button Sizes */
.btn-sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-lg);
}

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

/* Button Loading State */
.btn-loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-loading::after {
    content: "";
    position: absolute;
    width: 1rem;
    height: 1rem;
    top: 50%;
    left: 50%;
    margin-left: -0.5rem;
    margin-top: -0.5rem;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: var(--radius-full);
    animation: spinner 0.6s linear infinite;
}

@keyframes spinner {
    to { transform: rotate(360deg); }
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background-color: var(--bg-card);
    border: var(--card-border-width) solid var(--card-border-color);
    border-radius: var(--card-border-radius);
    box-shadow: var(--card-shadow);
    margin-bottom: var(--spacing-4);
    overflow: hidden;
    transition: var(--transition-all);
}

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

.card-header {
    padding: var(--spacing-4) var(--card-padding);
    border-bottom: var(--border-width-1) solid var(--border-light);
    background-color: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.card-body {
    padding: var(--card-padding);
    color: var(--text-secondary);
}

.card-footer {
    padding: var(--spacing-4) var(--card-padding);
    border-top: var(--border-width-1) solid var(--border-light);
    background-color: var(--bg-secondary);
}

.card-actions {
    display: flex;
    gap: var(--spacing-2);
}

/* ============================================
   FORMS
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-4);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.form-label .required {
    color: var(--color-error-600);
    margin-left: var(--spacing-1);
}

.form-control,
.form-select {
    display: block;
    width: 100%;
    padding: var(--input-padding-y) var(--input-padding-x);
    font-size: var(--input-font-size);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--input-bg);
    border: var(--input-border-width) solid var(--input-border-color);
    border-radius: var(--input-border-radius);
    transition: var(--transition-colors);
    font-family: var(--font-family-base);
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--input-focus-border-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-control::placeholder {
    color: var(--text-tertiary);
}

.form-control.is-invalid,
.form-select.is-invalid {
    border-color: var(--color-error-500);
    background-image: none;
}

.form-control.is-valid,
.form-select.is-valid {
    border-color: var(--color-success-500);
    background-image: none;
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

.form-help {
    display: block;
    margin-top: var(--spacing-1);
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.invalid-feedback,
.valid-feedback {
    display: block;
    margin-top: var(--spacing-1);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.invalid-feedback {
    color: var(--color-error-600);
}

.valid-feedback {
    color: var(--color-success-600);
}

.input-group-text {
    background-color: var(--bg-secondary);
    border: var(--input-border-width) solid var(--input-border-color);
    border-radius: var(--input-border-radius) 0 0 var(--input-border-radius);
    color: var(--text-secondary);
    padding: var(--input-padding-y) var(--input-padding-x);
}

.input-group .form-control {
    border-left: none;
    border-radius: 0 var(--input-border-radius) var(--input-border-radius) 0;
}

.input-group .form-control:focus {
    border-left: var(--input-border-width) solid var(--input-focus-border-color);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-3);
}

.form-check-input {
    width: 1.125rem;
    height: 1.125rem;
    margin-right: var(--spacing-2);
    cursor: pointer;
    flex-shrink: 0;
}

.form-check-label {
    cursor: pointer;
    user-select: none;
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
    position: relative;
    padding: var(--alert-padding-y) var(--alert-padding-x);
    margin-bottom: var(--spacing-4);
    border: var(--alert-border-width) solid transparent;
    border-radius: var(--alert-border-radius);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert i {
    flex-shrink: 0;
}

.alert-success {
    background-color: var(--color-success-50);
    border-color: var(--color-success-200);
    color: var(--color-success-700);
}

.alert-success i {
    color: var(--color-success-600);
}

.alert-danger,
.alert-error {
    background-color: var(--color-error-50);
    border-color: var(--color-error-200);
    color: var(--color-error-700);
}

.alert-danger i,
.alert-error i {
    color: var(--color-error-600);
}

.alert-warning {
    background-color: var(--color-warning-50);
    border-color: var(--color-warning-200);
    color: var(--color-warning-700);
}

.alert-warning i {
    color: var(--color-warning-600);
}

.alert-info {
    background-color: var(--color-info-50);
    border-color: var(--color-info-200);
    color: var(--color-info-700);
}

.alert-info i {
    color: var(--color-info-600);
}

.alert-close {
    position: absolute;
    top: var(--spacing-2);
    right: var(--spacing-2);
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    line-height: 1;
    cursor: pointer;
    opacity: 0.5;
    transition: var(--transition-opacity);
    padding: 0;
    width: 1.5rem;
    height: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.alert-close:hover {
    opacity: 1;
}

/* ============================================
   BADGES
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    border-radius: var(--radius-md);
    white-space: nowrap;
}

.badge-primary {
    background-color: var(--color-primary-600);
    color: var(--color-white);
}

.badge-success {
    background-color: var(--color-success-600);
    color: var(--color-white);
}

.badge-warning {
    background-color: var(--color-warning-500);
    color: var(--text-primary);
}

.badge-error,
.badge-danger {
    background-color: var(--color-error-600);
    color: var(--color-white);
}

.badge-info {
    background-color: var(--color-info-600);
    color: var(--color-white);
}

.badge-secondary {
    background-color: var(--color-gray-500);
    color: var(--color-white);
}

/* Status Badges */
.status-pending {
    background-color: var(--color-warning-100);
    color: var(--color-warning-700);
}

.status-confirmed {
    background-color: var(--color-success-100);
    color: var(--color-success-700);
}

.status-completed {
    background-color: var(--color-info-100);
    color: var(--color-info-700);
}

.status-cancelled {
    background-color: var(--color-error-100);
    color: var(--color-error-700);
}

/* ============================================
   TABLES
   ============================================ */

.table {
    width: 100%;
    border-collapse: collapse;
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-sm);
}

.table thead {
    background-color: var(--bg-secondary);
}

.table th {
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    border-bottom: var(--border-width-2) solid var(--border-light);
}

.table td {
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: var(--border-width-1) solid var(--border-light);
    color: var(--text-secondary);
}

.table tbody tr:hover {
    background-color: var(--color-primary-50);
    cursor: pointer;
}

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

/* ============================================
   LOADING STATES
   ============================================ */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--modal-backdrop-bg);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: var(--z-loading);
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    width: 3rem;
    height: 3rem;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-white);
    border-radius: var(--radius-full);
    animation: spinner 0.8s linear infinite;
}

.spinner {
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    border: 3px solid rgba(59, 130, 246, 0.3);
    border-top-color: var(--color-primary-600);
    border-radius: var(--radius-full);
    animation: spinner-spin 0.8s linear infinite;
}

@keyframes spinner-spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

/* Text Colors */
.text-primary { color: var(--color-primary-600) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-success { color: var(--color-success-600) !important; }
.text-error { color: var(--color-error-600) !important; }
.text-warning { color: var(--color-warning-600) !important; }
.text-muted { color: var(--text-muted) !important; }

/* Background Colors */
.bg-primary { background-color: var(--bg-primary) !important; }
.bg-secondary { background-color: var(--bg-secondary) !important; }
.bg-tertiary { background-color: var(--bg-tertiary) !important; }

/* Display */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-grid { display: grid !important; }

/* Flexbox */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.items-center { align-items: center; }
.gap-2 { gap: var(--spacing-2); }
.gap-4 { gap: var(--spacing-4); }

/* Spacing */
.m-0 { margin: 0; }
.mt-4 { margin-top: var(--spacing-4); }
.mb-4 { margin-bottom: var(--spacing-4); }
.p-0 { padding: 0; }
.p-4 { padding: var(--spacing-4); }

/* Border Radius */
.rounded { border-radius: var(--radius-md) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-full { border-radius: var(--radius-full) !important; }

/* Shadow */
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Display Utilities */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-inline { display: inline !important; }
.d-inline-block { display: inline-block !important; }
.d-flex { display: flex !important; }
.d-grid { display: grid !important; }

/* Visibility */
.visible { visibility: visible !important; }
.invisible { visibility: hidden !important; }

/* Cursor */
.cursor-pointer { cursor: pointer !important; }
.cursor-not-allowed { cursor: not-allowed !important; }

/* Width */
.w-auto { width: auto !important; }
.w-full { width: 100% !important; }
.w-200 { width: 200px !important; }

/* Height */
.h-auto { height: auto !important; }
.h-full { height: 100% !important; }
.h-300 { height: 300px !important; }
.h-400 { height: 400px !important; }

/* Position */
.position-relative { position: relative !important; }
.position-absolute { position: absolute !important; }
.position-fixed { position: fixed !important; }

/* Text Alignment */
.text-left { text-align: left !important; }
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }

/* Flexbox Utilities */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }
.gap-1 { gap: var(--spacing-1); }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }

/* Margin Utilities */
.m-0 { margin: 0 !important; }
.m-auto { margin: auto !important; }
.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--spacing-1) !important; }
.mt-2 { margin-top: var(--spacing-2) !important; }
.mt-3 { margin-top: var(--spacing-3) !important; }
.mt-4 { margin-top: var(--spacing-4) !important; }
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--spacing-1) !important; }
.mb-2 { margin-bottom: var(--spacing-2) !important; }
.mb-3 { margin-bottom: var(--spacing-3) !important; }
.mb-4 { margin-bottom: var(--spacing-4) !important; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* Padding Utilities */
.p-0 { padding: 0 !important; }
.p-1 { padding: var(--spacing-1) !important; }
.p-2 { padding: var(--spacing-2) !important; }
.p-3 { padding: var(--spacing-3) !important; }
.p-4 { padding: var(--spacing-4) !important; }
.pt-0 { padding-top: 0 !important; }
.pt-4 { padding-top: var(--spacing-4) !important; }
.pb-0 { padding-bottom: 0 !important; }
.pb-4 { padding-bottom: var(--spacing-4) !important; }

/* ============================================
   ANIMATIONS
   ============================================ */

/* Fade-in animation - Use on specific elements, not body */
.fade-in {
    animation: fadeIn 0.3s ease;
    animation-fill-mode: both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Safer fade-in that doesn't start invisible */
.fade-in-safe {
    animation: fadeInSafe 0.3s ease;
}

@keyframes fadeInSafe {
    from {
        opacity: 0.95;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   MODERN FOOTER
   ============================================ */

.nc-footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    margin-top: auto;
}

.nc-footer-brand {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    font-family: var(--font-family-heading);
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--color-white);
}

.nc-footer-link {
    color: var(--color-gray-400);
    text-decoration: none;
    font-size: var(--font-size-sm);
    margin-left: var(--spacing-4);
    transition: color 0.2s ease;
}

.nc-footer-link:hover {
    color: var(--color-primary-400);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .navbar-brand {
        font-size: var(--font-size-lg);
    }
    
    .card-body {
        padding: var(--spacing-4);
    }
    
    .btn {
        padding: var(--spacing-2) var(--spacing-3);
        font-size: var(--font-size-sm);
    }
    
    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }
}

@media (max-width: 576px) {
    body {
        font-size: var(--font-size-sm);
    }
    
    .container {
        padding-left: var(--spacing-4);
        padding-right: var(--spacing-4);
    }
    
    .card {
        margin-bottom: var(--spacing-3);
    }
    
    .card-body {
        padding: var(--spacing-3);
    }
    
    h1 { font-size: var(--font-size-2xl); }
    h2 { font-size: var(--font-size-xl); }
    h3 { font-size: var(--font-size-lg); }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .navbar,
    .footer,
    .btn,
    .alert {
        display: none;
    }
    
    body {
        font-size: 12pt;
        background: white;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid var(--border-medium);
    }
}