/* ============================================
   MODERN USER INTERFACE DESIGN SYSTEM
   Royeli Travel B2B Portal
   ============================================ */

/* Import Premium Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@400;500;600;700;800;900&display=swap');

/* ============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */
:root {
    /* Primary Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-warning: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-info: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
    --gradient-ocean: linear-gradient(135deg, #2E3192 0%, #1BFFFF 100%);
    --gradient-sunset: linear-gradient(135deg, #FF6B6B 0%, #FFE66D 100%);
    --gradient-forest: linear-gradient(135deg, #134E5E 0%, #71B280 100%);
    --gradient-royal: linear-gradient(135deg, #141E30 0%, #243B55 100%);
    --gradient-purple: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-blue: linear-gradient(135deg, #0281b8 0%, #0a4d6e 100%);

    /* Background Gradients */
    --bg-gradient-light: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --bg-gradient-dark: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    --bg-gradient-mesh: radial-gradient(at 40% 20%, hsla(28, 100%, 74%, 1) 0px, transparent 50%),
        radial-gradient(at 80% 0%, hsla(189, 100%, 56%, 1) 0px, transparent 50%),
        radial-gradient(at 0% 50%, hsla(355, 100%, 93%, 1) 0px, transparent 50%),
        radial-gradient(at 80% 50%, hsla(340, 100%, 76%, 1) 0px, transparent 50%),
        radial-gradient(at 0% 100%, hsla(22, 100%, 77%, 1) 0px, transparent 50%),
        radial-gradient(at 80% 100%, hsla(242, 100%, 70%, 1) 0px, transparent 50%),
        radial-gradient(at 0% 0%, hsla(343, 100%, 76%, 1) 0px, transparent 50%);

    /* Colors */
    --color-primary: #667eea;
    --color-primary-dark: #5568d3;
    --color-secondary: #764ba2;
    --color-accent: #f093fb;
    --color-success: #4facfe;
    --color-warning: #fee140;
    --color-danger: #f5576c;
    --color-info: #30cfd0;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-bg-light: rgba(255, 255, 255, 0.15);
    --glass-bg-dark: rgba(0, 0, 0, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);

    /* 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), 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);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.5);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* 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 cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Typography */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ============================================
   BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-800);
    background: var(--bg-gradient-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
}

/* ============================================
   GLASSMORPHISM COMPONENTS
   ============================================ */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.glass-light {
    background: var(--glass-bg-light);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
}

.glass-dark {
    background: var(--glass-bg-dark);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.2);
}

.glass-card {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    padding: var(--spacing-xl);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.45);
}

/* ============================================
   GRADIENT UTILITIES
   ============================================ */
.gradient-primary {
    background: var(--gradient-primary);
}

.gradient-secondary {
    background: var(--gradient-secondary);
}

.gradient-success {
    background: var(--gradient-success);
}

.gradient-ocean {
    background: var(--gradient-ocean);
}

.gradient-sunset {
    background: var(--gradient-sunset);
}

.gradient-blue {
    background: var(--gradient-blue);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   MODERN BUTTONS
   ============================================ */
.btn-modern {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left var(--transition-base);
}

.btn-modern:hover::before {
    left: 100%;
}

.btn-gradient {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-gradient:hover {
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
    transform: translateY(-2px);
}

.btn-gradient-success {
    background: var(--gradient-success);
    color: white;
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.4);
}

.btn-gradient-success:hover {
    box-shadow: 0 6px 20px rgba(79, 172, 254, 0.6);
    transform: translateY(-2px);
}

.btn-gradient-warning {
    background: var(--gradient-warning);
    color: var(--color-gray-900);
    box-shadow: 0 4px 15px rgba(254, 225, 64, 0.4);
}

.btn-glass {
    background: var(--glass-bg-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--color-gray-900);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

/* ============================================
   MODERN CARDS
   ============================================ */
.card-modern {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-100);
}

.card-modern:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px);
}

.card-gradient {
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.card-gradient::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: shimmer 3s infinite;
}

/* ============================================
   MODERN FORM INPUTS
   ============================================ */
.input-modern {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    background: white;
    transition: all var(--transition-base);
    outline: none;
}

.input-modern:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.input-modern::placeholder {
    color: var(--color-gray-400);
}

.input-glass {
    background: var(--glass-bg-light);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--color-gray-900);
    padding: 0.875rem 1rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.input-glass:focus {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes shimmer {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

@keyframes glow {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(102, 126, 234, 0.5);
    }

    50% {
        box-shadow: 0 0 30px rgba(102, 126, 234, 0.8);
    }
}

/* Animation Classes */
.animate-fadeIn {
    animation: fadeIn 0.6s ease-out;
}

.animate-slideInLeft {
    animation: slideInLeft 0.6s ease-out;
}

.animate-slideInRight {
    animation: slideInRight 0.6s ease-out;
}

.animate-scaleIn {
    animation: scaleIn 0.4s ease-out;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-glow {
    animation: glow 2s ease-in-out infinite;
}

/* ============================================
   MODERN SIDEBAR
   ============================================ */
.sidebar-modern {
    background: var(--gradient-royal);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
}

.sidebar-item {
    display: flex;
    align-items: center;
    padding: 0.875rem 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    border-radius: var(--radius-lg);
    margin: 0.25rem 0.5rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.sidebar-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--gradient-primary);
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

.sidebar-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateX(5px);
}

.sidebar-item:hover::before {
    transform: scaleY(1);
}

.sidebar-item.active {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.sidebar-item.active::before {
    transform: scaleY(1);
}

/* ============================================
   MODERN TOPBAR
   ============================================ */
.topbar-modern {
    background: white;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-gray-100);
}

/* ============================================
   STAT CARDS
   ============================================ */
.stat-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--color-primary);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    opacity: 0.05;
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.stat-card-gradient {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

.stat-card-gradient::before {
    background: white;
    opacity: 0.1;
}

/* ============================================
   BADGES
   ============================================ */
.badge-modern {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

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

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

.badge-warning {
    background: var(--gradient-warning);
    color: var(--color-gray-900);
}

/* ============================================
   LOADING STATES
   ============================================ */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--radius-md);
}

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

    100% {
        background-position: -200% 0;
    }
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */
@media (max-width: 768px) {

    .card-modern,
    .glass-card {
        padding: var(--spacing-lg);
    }

    .btn-modern {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
}

/* ============================================
   CUSTOM SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-secondary);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-glow {
    box-shadow: var(--shadow-glow);
}

.hover-lift {
    transition: transform var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-5px);
}

.backdrop-blur {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}