/**
 * EasyPaesy - Custom Styles
 * Mobile-first, performance-optimized CSS
 * Professional modern design
 */

/* Base Styles - Light Mode */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    --light-color: #f8fafc;
    --dark-color: #1e293b;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-warning: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --gradient-info: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    --gradient-rainbow: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #f5576c 75%, #4facfe 100%);
    --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);
    
    /* Light mode colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --card-bg: #ffffff;
    --input-bg: #ffffff;
    --input-border: #e2e8f0;
}

/* Dark Mode */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --card-bg: #1e293b;
    --input-bg: #1e293b;
    --input-border: #334155;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Inter', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

main {
    flex: 1;
}

/* Navigation */
.navbar {
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.navbar-brand i {
    margin-right: 0.5rem;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

/* Tool Cards */
.tool-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    border-radius: 1rem;
    overflow: hidden;
    background: var(--card-bg);
    box-shadow: var(--shadow-md);
    height: 100%;
    border: 2px solid transparent;
    position: relative;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-rainbow);
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.tool-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: rgba(102, 126, 234, 0.3);
}

.tool-card .card-body {
    padding: 2rem;
}

.tool-card i {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    filter: drop-shadow(0 2px 4px rgba(102, 126, 234, 0.3));
}

.tool-card-animated {
    animation: cardPulse 2s ease-in-out infinite;
}

@keyframes cardPulse {
    0%, 100% {
        box-shadow: var(--shadow-lg);
    }
    50% {
        box-shadow: 0 10px 30px -5px rgba(102, 126, 234, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    }
}

.card {
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    background-color: var(--card-bg);
    color: var(--text-primary);
}

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

/* Form Styles */
.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* Button Styles */
.btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 600;
    border-radius: 0.5rem;
    padding: 0.625rem 1.5rem;
    letter-spacing: 0.025em;
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    background: var(--gradient-primary);
    border: none;
    color: white;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #5568d3 0%, #6a3f91 100%);
}

.btn-gradient {
    background: var(--gradient-success);
    border: none;
    color: white;
    font-weight: 600;
}

.btn-gradient:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: white;
}

.btn-outline-primary {
    border-width: 2px;
    font-weight: 600;
}

.btn-outline-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1.125rem;
}

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

/* Results Section */
#resultsSection {
    animation: fadeIn 0.3s ease-in;
}

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

/* Accessibility */
.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;
}

/* Focus Styles for Accessibility */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2rem;
    }
    
    .display-5 {
        font-size: 1.75rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

/* Print Styles */
@media print {
    .navbar,
    footer,
    .btn,
    #toolForm {
        display: none !important;
    }
    
    #resultsSection {
        display: block !important;
    }
}

/* Performance Optimizations */
* {
    box-sizing: border-box;
}

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

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Code Blocks */
pre {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    padding: 1rem;
    overflow-x: auto;
    font-size: 0.875rem;
    color: var(--text-primary);
}

code {
    font-family: 'Courier New', Courier, monospace;
}

/* Hero Section */
.hero-section {
    background: var(--gradient-rainbow);
    background-size: 200% 200%;
    animation: gradientShift 8s ease infinite;
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.1"><circle cx="30" cy="30" r="4"/></g></svg>');
    opacity: 0.5;
    animation: patternMove 20s linear infinite;
}

@keyframes patternMove {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 60px 60px;
    }
}

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

.hero-section h1 {
    font-weight: 800;
    letter-spacing: -1px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* Section Spacing */
section {
    padding: 4rem 0;
}

.section-title {
    font-weight: 700;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--dark-color);
    letter-spacing: -0.5px;
}

/* Form Enhancements */
.form-control,
.form-select {
    border-radius: 0.5rem;
    border: 2px solid var(--input-border);
    padding: 0.75rem 1rem;
    transition: all 0.2s ease;
    font-size: 1rem;
    background-color: var(--input-bg);
    color: var(--text-primary);
}

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

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    transform: translateY(-1px);
}

.form-label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

/* Results Section */
#resultsSection {
    animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 1rem;
    overflow: hidden;
}

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

/* Footer */
footer {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%) !important;
    margin-top: auto;
}

[data-theme="dark"] footer {
    background: linear-gradient(135deg, #0f172a 0%, #020617 100%) !important;
}

footer a {
    transition: all 0.2s ease;
}

footer a:hover {
    color: #ffffff !important;
    transform: translateX(4px);
}

/* Badge Styles */
.badge {
    padding: 0.5rem 0.75rem;
    font-weight: 600;
    border-radius: 0.375rem;
}

/* Alert Enhancements */
.alert {
    border-radius: 0.75rem;
    border: none;
    box-shadow: var(--shadow-sm);
    padding: 1.25rem 1.5rem;
}

/* Loading States */
.spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.3em;
}

/* Utility Classes */
.text-shadow {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.shadow-hover {
    transition: box-shadow 0.3s ease;
}

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

.gradient-text {
    background: var(--gradient-rainbow);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.tool-icon-wrapper {
    display: inline-block;
    padding: 1.5rem;
    border-radius: 50%;
    background: var(--gradient-primary);
    box-shadow: 0 8px 16px rgba(102, 126, 234, 0.3);
    animation: iconFloat 3s ease-in-out infinite;
}

@keyframes iconFloat {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.tool-icon-wrapper i {
    color: white;
    font-size: 3rem !important;
}

.result-card {
    border: 2px solid transparent;
    background: linear-gradient(white, white) padding-box,
                var(--gradient-success) border-box;
    animation: resultSlideIn 0.5s ease-out;
}

[data-theme="dark"] .result-card {
    background: linear-gradient(var(--card-bg), var(--card-bg)) padding-box,
                var(--gradient-success) border-box;
}

@keyframes resultSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.result-header {
    background: var(--gradient-success) !important;
    color: white;
    border: none;
    padding: 1rem 1.5rem;
}

.info-card {
    border-left: 4px solid;
    border-image: var(--gradient-info) 1;
    background: linear-gradient(to right, rgba(6, 182, 212, 0.05), transparent);
}

.result-text pre {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-left: 4px solid;
    border-image: var(--gradient-primary) 1;
    font-family: 'Courier New', monospace;
    color: var(--text-primary);
}

[data-theme="dark"] .result-text pre {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}

/* Category Badges */
.category-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Search Input */
#toolSearch {
    border-radius: 2rem;
    padding: 0.875rem 1.5rem;
    border: 2px solid #e2e8f0;
    font-size: 1rem;
}

#toolSearch:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Tool Stats */
.tool-stats {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.stat-item {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    padding: 1rem 1.5rem;
    border-radius: 0.75rem;
    text-align: center;
    min-width: 120px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.stat-item .stat-value {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-rainbow);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: gradientShift 3s ease infinite;
}

.stat-box {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border: 2px solid transparent;
    border-image: var(--gradient-primary) 1;
    transition: all 0.3s ease;
}

.stat-box:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.result-box {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    border-left: 4px solid;
    border-image: var(--gradient-primary) 1;
}

.stat-item .stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Dark mode specific adjustments */
[data-theme="dark"] .bg-light {
    background-color: var(--bg-secondary) !important;
}

[data-theme="dark"] .text-muted {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .text-secondary {
    color: var(--text-secondary) !important;
}

[data-theme="dark"] .table {
    color: var(--text-primary);
}

[data-theme="dark"] .alert {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .card-header {
    background-color: var(--bg-tertiary) !important;
    border-color: var(--border-color);
}

[data-theme="dark"] .table {
    --bs-table-bg: var(--card-bg);
    --bs-table-color: var(--text-primary);
    --bs-table-border-color: var(--border-color);
}

[data-theme="dark"] .progress {
    background-color: var(--bg-tertiary);
}

[data-theme="dark"] .list-group-item {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] code {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
}

/* Theme Toggle Button */
#themeToggle {
    border: none;
    background: transparent;
    cursor: pointer;
    transition: transform 0.2s ease;
}

#themeToggle:hover {
    transform: scale(1.1);
}

#themeToggle:focus {
    outline: 2px solid rgba(255, 255, 255, 0.5);
    outline-offset: 2px;
    border-radius: 0.25rem;
}