/* ===========================
   D2O System - Custom Styles
   =========================== */

/* Root Variables */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-bg: #f8f9fa;
    --dark-bg: #212529;
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.15);
    --border-radius: 15px;
    --transition: all 0.3s ease;
}

/* Global Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* Navbar Styles */
.navbar {
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(33, 37, 41, 0.95) !important;
    box-shadow: var(--shadow-sm);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.25rem;
    transition: var(--transition);
}

.navbar-brand:hover {
    transform: scale(1.05);
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
}

.hero-slide {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 100vh;
}

.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: inherit;
    z-index: -1;
}

.hero-slide .container {
    z-index: 1;
    position: relative;
}

.display-3 {
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    animation: fadeInUp 1s ease;
}

.lead {
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
    font-size: 1.25rem;
}

/* Search Section */
.search-section {
    padding: 100px 0;
    background: var(--light-bg);
}

.search-card {
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

#icNumber {
    font-size: 1.1rem;
    padding: 15px;
}

.input-group-text {
    background: white;
    border: 2px solid #e0e0e0;
    border-right: none;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

#icNumber {
    border-left: none;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

/* Status Cards */
.status-card {
    border-radius: 10px;
    transition: var(--transition);
    border: 1px solid #e0e0e0;
}

.status-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.status-card h4 {
    font-weight: bold;
}

/* Features Section */
.features-section {
    padding: 100px 0;
}

.feature-card {
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: none;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    position: relative;
}

.feature-icon i {
    transition: var(--transition);
}

.feature-card:hover .feature-icon i {
    transform: scale(1.1);
    text-shadow: 0 0 20px currentColor;
}

/* Contact Section */
.contact-section {
    padding: 100px 0;
    background: var(--dark-bg);
    color: white;
}

.contact-item {
    text-align: center;
    padding: 20px;
}

.contact-item i {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 2rem;
}

/* Footer */
footer {
    background: #000;
    color: white;
    padding: 30px 0;
    border-top: 5px solid var(--primary-color);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.5s ease;
}

/* Custom Buttons */
.btn-primary {
    background: var(--primary-gradient);
    border: none;
    border-radius: 10px;
    padding: 12px 30px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
    border: none;
}

.btn-outline-light:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
}

/* Hover Effects */
.hover-shadow {
    transition: var(--transition);
}

.hover-shadow:hover {
    box-shadow: var(--shadow-lg) !important;
    transform: translateY(-5px);
}

/* Progress Bar */
.progress {
    border-radius: 10px;
    height: 25px;
    background: #e9ecef;
}

.progress-bar {
    border-radius: 10px;
    font-weight: bold;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section .display-3 {
        font-size: 2.5rem;
    }
    
    .hero-section .lead {
        font-size: 1.1rem;
    }
    
    .search-section,
    .features-section,
    .contact-section {
        padding: 60px 0;
    }
    
    .form-section {
        margin-bottom: 30px;
    }
    
    .navbar-brand {
        font-size: 1.1rem;
    }
}

@media (max-width: 576px) {
    .hero-section .display-3 {
        font-size: 2rem;
    }
    
    .search-section,
    .features-section,
    .contact-section {
        padding: 40px 0;
    }
    
    .btn-primary {
        width: 100%;
        margin-top: 10px;
    }
}

/* Loading Spinner */
.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* Form Enhancements */
.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    transform: scale(1.02);
}

.invalid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: var(--danger-color);
}

/* File Upload Styles */
.file-upload-wrapper {
    transition: var(--transition);
    position: relative;
    cursor: pointer;
}

.file-upload-wrapper:hover {
    border-color: var(--primary-color);
    background: rgba(102, 126, 234, 0.05);
}

.file-upload-wrapper.dragover {
    border-color: var(--success-color);
    background: rgba(40, 167, 69, 0.1);
    transform: scale(1.02);
}

/* Signature Pad */
.signature-pad-wrapper {
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
    background: white;
}

.signature-pad {
    width: 100%;
    min-height: 200px;
    background: #fff;
    border-bottom: 1px solid #e0e0e0;
    touch-action: none;
}

.signature-controls {
    background: #f8f9fa;
    padding: 15px;
    text-align: center;
}

/* Calculation Summary */
.calculation-summary {
    background: linear-gradient(135deg, #f8f9ff 0%, #e8f4f8 100%);
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    padding: 25px;
}

.calc-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(102, 126, 234, 0.2);
}

.calc-row:last-child {
    border-bottom: none;
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-top: 10px;
}

/* Offcanvas Menu */
.offcanvas {
    background: var(--dark-bg);
}

.offcanvas .nav-link {
    color: white !important;
    padding: 12px 20px;
    border-radius: 10px;
    margin-bottom: 5px;
    transition: var(--transition);
}

.offcanvas .nav-link:hover {
    background: rgba(255,255,255,0.1);
    transform: translateX(5px);
}

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

.shadow-hover {
    transition: var(--transition);
}

.shadow-hover:hover {
    box-shadow: var(--shadow-lg);
}

/* Print Styles */
@media print {
    .navbar, .offcanvas, footer {
        display: none;
    }
    
    body {
        background: white;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    body {
        background: #1a1a1a;
        color: #e9ecef;
    }
    
    .card {
        background: #2d2d2d;
        color: #e9ecef;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

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