/* ============================================
   Modern UI Design System - ETAKA TRADLINK
   ============================================ */

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

/* === CSS Custom Properties === */
:root {
    /* Primary Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --gradient-warning: linear-gradient(135deg, #ee0979 0%, #ff6a00 100%);
    --gradient-info: linear-gradient(135deg, #2193b0 0%, #6dd5ed 100%);
    --gradient-danger: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
    --gradient-dark: linear-gradient(135deg, #232526 0%, #414345 100%);
    --gradient-purple: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-teal: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --gradient-orange: linear-gradient(135deg, #f2994a 0%, #f2c94c 100%);
    --gradient-blue: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-pink: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    
    /* Sidebar & Header Gradients */
    --gradient-sidebar: linear-gradient(180deg, #1a0b2e 0%, #2d1b4e 50%, #1a0b2e 100%);
    --gradient-header: linear-gradient(90deg, #2b1055 0%, #7597de 100%);
    
    /* Colors */
    --color-primary: #667eea;
    --color-success: #38ef7d;
    --color-warning: #ff6a00;
    --color-danger: #f45c43;
    --color-info: #6dd5ed;
    --color-dark: #232526;
    --color-light: #f8f9fa;
    --color-white: #ffffff;
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
    --shadow-xl: 0 12px 48px rgba(0,0,0,0.24);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.4);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-base: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* === Global Resets & Base Styles === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-secondary);
    background: #f5f7fa;
    color: #333;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 600;
    line-height: 1.2;
}

/* === Modern Button Styles === */
.btn-modern {
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 14px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-gradient-primary:hover {
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

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

.btn-gradient-danger {
    background: var(--gradient-danger);
    color: white;
}

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

/* === Modern Card Styles === */
.modern-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.modern-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.modern-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

/* Dashboard Stat Cards */
.stat-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid rgba(0,0,0,0.05);
}

.stat-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.stat-card.gradient-blue {
    background: var(--gradient-primary);
    color: white;
}

.stat-card.gradient-green {
    background: var(--gradient-success);
    color: white;
}

.stat-card.gradient-orange {
    background: var(--gradient-warning);
    color: white;
}

.stat-card.gradient-info {
    background: var(--gradient-info);
    color: white;
}

.stat-card.gradient-danger {
    background: var(--gradient-danger);
    color: white;
}

.stat-card.gradient-dark {
    background: var(--gradient-dark);
    color: white;
}

.stat-card.gradient-teal {
    background: var(--gradient-teal);
    color: white;
}

.stat-card.gradient-pink {
    background: var(--gradient-pink);
    color: white;
}

.stat-card .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.stat-card .card-icon {
    font-size: 2.5rem;
    opacity: 0.9;
    animation: float 3s ease-in-out infinite;
}

.stat-card .card-value {
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-card .card-title {
    font-size: 0.95rem;
    opacity: 0.95;
    font-weight: 500;
}

/* === Glassmorphism Effects === */
.glass-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
}

.glass-sidebar {
    background: rgba(26, 11, 46, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* === Sidebar Modern Styles === */
.section-menu-left {
    background: var(--gradient-sidebar) !important;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.section-menu-left::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

.menu-list {
    position: relative;
    z-index: 1;
}

.menu-item a {
    transition: all var(--transition-base) !important;
    position: relative;
    overflow: hidden;
}

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

.menu-item.active a::before,
.menu-item a:hover::before {
    transform: scaleY(1);
}

.menu-item.active a {
    background: rgba(118, 75, 162, 0.3) !important;
    box-shadow: 0 4px 12px rgba(118, 75, 162, 0.2);
}

.menu-item a:hover {
    background: rgba(102, 126, 234, 0.2) !important;
    transform: translateX(8px);
}

.menu-item .icon i {
    transition: all var(--transition-base);
}

.menu-item a:hover .icon i {
    transform: scale(1.2) rotate(5deg);
}

/* === Header Modern Styles === */
.header-dashboard {
    background: var(--gradient-header) !important;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.header-dashboard::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

/* === Modern Form Inputs === */
.modern-input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-md);
    font-family: var(--font-secondary);
    font-size: 14px;
    transition: all var(--transition-base);
    background: white;
}

.modern-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

.modern-input::placeholder {
    color: #999;
}

/* Input with Icon */
.input-with-icon {
    position: relative;
}

.input-with-icon i {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    transition: color var(--transition-base);
}

.input-with-icon input {
    padding-left: 48px;
}

.input-with-icon input:focus + i {
    color: var(--color-primary);
}

/* === Modern Tables === */
.modern-table-container {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.modern-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.modern-table thead {
    background: var(--gradient-primary);
    color: white;
}

.modern-table thead th {
    padding: 16px;
    font-weight: 600;
    text-align: left;
    font-family: var(--font-primary);
    position: relative;
}

.modern-table thead th:first-child {
    border-top-left-radius: var(--radius-md);
}

.modern-table thead th:last-child {
    border-top-right-radius: var(--radius-md);
}

.modern-table tbody tr {
    transition: all var(--transition-base);
    border-bottom: 1px solid #f0f0f0;
}

.modern-table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
    transform: scale(1.01);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.modern-table tbody td {
    padding: 14px 16px;
}

/* === Animation Keyframes === */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* === Login Page Styles === */
.login-container {
    min-height: 100vh;
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    top: -250px;
    right: -250px;
    animation: float 6s ease-in-out infinite;
}

.login-container::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    bottom: -200px;
    left: -200px;
    animation: float 8s ease-in-out infinite reverse;
}

.login-box-modern {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: 3rem;
    box-shadow: var(--shadow-xl);
    max-width: 450px;
    width: 100%;
    margin: 2rem;
    position: relative;
    z-index: 1;
    animation: scaleIn 0.5s ease-out;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.login-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo img {
    max-width: 180px;
    animation: fadeIn 0.8s ease-out;
}

.login-title {
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 0.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.form-group-modern {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group-modern label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #333;
    font-size: 0.9rem;
}

.form-group-modern input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: all var(--transition-base);
    background: white;
}

.form-group-modern input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    font-family: var(--font-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

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

.password-toggle {
    position: absolute;
    right: 18px;
    top: 38px;
    cursor: pointer;
    color: #999;
    transition: color var(--transition-base);
}

.password-toggle:hover {
    color: var(--color-primary);
}

/* === 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);
}

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

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

.transition-all {
    transition: all var(--transition-base);
}

/* === Responsive Design === */
@media (max-width: 768px) {
    .stat-card {
        margin-bottom: 1rem;
    }
    
    .login-box-modern {
        padding: 2rem;
        margin: 1rem;
    }
    
    .modern-card {
        padding: var(--spacing-md);
    }
}

/* === DataTables Modern Styling === */
.dataTables_wrapper {
    padding: var(--spacing-md);
}

.dataTables_wrapper .dataTables_filter input {
    border: 2px solid #e0e0e0;
    border-radius: var(--radius-md);
    padding: 8px 16px;
    margin-left: 0.5rem;
    transition: all var(--transition-base);
}

.dataTables_wrapper .dataTables_filter input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
    border-radius: var(--radius-sm);
    margin: 0 2px;
    transition: all var(--transition-base);
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current {
    background: var(--gradient-primary) !important;
    color: white !important;
    border: none;
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
    background: var(--color-primary) !important;
    color: white !important;
    border: none;
}

/* === Badge Styles === */
.badge-modern {
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    font-family: var(--font-primary);
    display: inline-block;
}

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

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

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

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

/* === Loading Animation === */
.loader {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}