/**
 * Custom Styles for KeyGen Pro Download Site
 * Extends Tailwind CSS with animations, custom components, and utilities
 */

/* ===================================
   CSS Custom Properties (Variables)
   =================================== */
:root {
    /* Brand Colors */
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-secondary: #8b5cf6;
    --color-accent: #06b6d4;

    /* Status Colors */
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;

    /* Background Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-dark: linear-gradient(135deg, #1e1e2e 0%, #2d2d44 100%);
    --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);

    /* Shadows */
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.5);
    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-card-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Timing */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

/* ===================================
   Base Styles & Resets
   =================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Focus visible for accessibility */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ===================================
   Animations & Keyframes
   =================================== */

/* Fade In */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Fade In Up */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Fade In Down */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scale In */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Slide In Right */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Pulse Glow */
@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(59, 130, 246, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(59, 130, 246, 0.8), 0 0 30px rgba(59, 130, 246, 0.4);
    }
}

/* Shimmer Effect */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* Bounce */
@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Spin */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

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

/* Progress Bar */
@keyframes progressBar {
    from {
        width: 0%;
    }
    to {
        width: 100%;
    }
}

/* ===================================
   Animation Utility Classes
   =================================== */
.animate-fade-in {
    animation: fadeIn var(--transition-normal) ease-out forwards;
}

.animate-fade-in-up {
    animation: fadeInUp 0.5s ease-out forwards;
}

.animate-fade-in-down {
    animation: fadeInDown 0.5s ease-out forwards;
}

.animate-scale-in {
    animation: scaleIn var(--transition-normal) ease-out forwards;
}

.animate-slide-in-right {
    animation: slideInRight 0.5s ease-out forwards;
}

.animate-pulse-glow {
    animation: pulseGlow 2s infinite;
}

.animate-shimmer {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

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

.animate-spin {
    animation: spin 1s linear infinite;
}

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

/* Staggered animations for lists */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* ===================================
   Button Components
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    gap: 0.5rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card-hover);
}

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

.btn-download {
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    color: white;
    font-size: 1.125rem;
    padding: 1rem 2rem;
    box-shadow: 0 4px 14px 0 rgba(34, 197, 94, 0.4);
}

.btn-download:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px 0 rgba(34, 197, 94, 0.5);
}

.btn-download:active:not(:disabled) {
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-primary);
    color: white;
}

.btn-icon {
    padding: 0.5rem;
    border-radius: 0.375rem;
}

.btn-copy {
    background: #374151;
    color: white;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-copy:hover:not(:disabled) {
    background: #4b5563;
}

.btn-copy.copied {
    background: var(--color-success);
}

/* ===================================
   Card Components
   =================================== */
.card {
    background: white;
    border-radius: 1rem;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-normal);
    overflow: hidden;
}

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

.card-dark {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.card-glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

/* ===================================
   Modal Component
   =================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: white;
    border-radius: 1rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-dark {
    background: #1e293b;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.modal-dark .modal-header {
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

.modal-dark .modal-footer {
    border-top-color: rgba(255, 255, 255, 0.1);
}

/* ===================================
   Password Display Component
   =================================== */
.password-box {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 0.5rem;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.password-text {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 1.125rem;
    color: #22c55e;
    letter-spacing: 0.05em;
    user-select: all;
}

/* ===================================
   Form Components
   =================================== */
.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 0.5rem;
    transition: all var(--transition-fast);
    background: white;
}

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

.form-input-dark {
    background: #1e293b;
    border-color: #475569;
    color: white;
}

.form-input-dark:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-input::placeholder {
    color: #9ca3af;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: #374151;
}

.form-label-dark {
    color: #e5e7eb;
}

.form-error {
    color: var(--color-error);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

/* ===================================
   Alert Components
   =================================== */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #16a34a;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #dc2626;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: #d97706;
}

.alert-info {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #2563eb;
}

/* ===================================
   Hero Section
   =================================== */
.hero-section {
    background: var(--gradient-hero);
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%239C92AC' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

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

/* ===================================
   Feature Cards
   =================================== */
.feature-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1rem;
    padding: 1.5rem;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    margin-bottom: 1rem;
}

/* ===================================
   Instructions Section
   =================================== */
.instruction-step {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    border-radius: 9999px;
    background: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
}

.step-content {
    flex: 1;
}

/* ===================================
   Loading States
   =================================== */
.loading-spinner {
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-dots {
    display: flex;
    gap: 0.25rem;
}

.loading-dots span {
    width: 0.5rem;
    height: 0.5rem;
    background: currentColor;
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }
.loading-dots span:nth-child(3) { animation-delay: 0; }

.skeleton {
    background: linear-gradient(90deg, #e5e7eb 25%, #f3f4f6 50%, #e5e7eb 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 0.25rem;
}

.skeleton-dark {
    background: linear-gradient(90deg, #374151 25%, #4b5563 50%, #374151 75%);
    background-size: 200% 100%;
}

/* ===================================
   Progress Bar
   =================================== */
.progress-bar {
    width: 100%;
    height: 0.5rem;
    background: #e5e7eb;
    border-radius: 9999px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 9999px;
    transition: width var(--transition-normal);
}

.progress-bar-animated .progress-bar-fill {
    animation: progressBar 2s ease-out forwards;
}

/* ===================================
   Tooltip
   =================================== */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 0.75rem;
    background: #1f2937;
    color: white;
    font-size: 0.75rem;
    white-space: nowrap;
    border-radius: 0.375rem;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    margin-bottom: 0.5rem;
}

.tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* ===================================
   Badge Component
   =================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 9999px;
}

.badge-success {
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

.badge-error {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
}

.badge-info {
    background: rgba(59, 130, 246, 0.1);
    color: #2563eb;
}

/* ===================================
   Admin Dashboard Styles
   =================================== */
.stat-card {
    background: white;
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: all var(--transition-normal);
}

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

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: #6b7280;
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Chart Container */
.chart-container {
    background: white;
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
}

.chart-title {
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 1rem;
}

/* Data Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    text-align: left;
    padding: 0.75rem 1rem;
    background: #f9fafb;
    color: #6b7280;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid #e5e7eb;
}

.data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #e5e7eb;
    color: #374151;
}

.data-table tr:hover td {
    background: #f9fafb;
}

/* ===================================
   Responsive Utilities
   =================================== */
@media (max-width: 768px) {
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }

    .btn-download {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
        width: 100%;
    }

    .modal-content {
        width: 95%;
        margin: 1rem;
    }

    .password-box {
        flex-direction: column;
        align-items: stretch;
    }

    .password-text {
        font-size: 1rem;
        text-align: center;
        word-break: break-all;
    }

    .stat-value {
        font-size: 1.5rem;
    }
}

/* ===================================
   Print Styles
   =================================== */
@media print {
    .no-print {
        display: none !important;
    }

    .hero-section {
        background: white;
        color: black;
    }
}

/* ===================================
   Accessibility
   =================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .btn-primary {
        background: #1e40af;
        border: 2px solid white;
    }

    .card {
        border: 2px solid #000;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .auto-dark {
        background: #1f2937;
        color: #f9fafb;
    }
}