/**
 * Right Scoop QR Code Generator Styles
 * Modern SaaS design with dark mode support
 * Mobile-first responsive approach
 */

/* ============================================
   CSS VARIABLES - LIGHT/DARK MODE
   ============================================ */
:root {
    /* Light Mode Colors */
    --rsqr-bg: #f8fafc;
    --rsqr-card-bg: #ffffff;
    --rsqr-text: #1e293b;
    --rsqr-text-secondary: #64748b;
    --rsqr-border: #e2e8f0;
    --rsqr-primary: #6366f1;
    --rsqr-primary-hover: #4f46e5;
    --rsqr-primary-light: rgba(99, 102, 241, 0.1);
    --rsqr-secondary: #8b5cf6;
    --rsqr-success: #10b981;
    --rsqr-error: #ef4444;
    --rsqr-warning: #f59e0b;
    
    /* Shadows */
    --rsqr-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --rsqr-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --rsqr-shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --rsqr-shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --rsqr-radius-sm: 8px;
    --rsqr-radius: 16px;
    --rsqr-radius-lg: 24px;
    
    /* Transitions */
    --rsqr-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Variables */
.rsqr-dark-mode {
    --rsqr-bg: #0f172a;
    --rsqr-card-bg: #1e293b;
    --rsqr-text: #f8fafc;
    --rsqr-text-secondary: #94a3b8;
    --rsqr-border: #334155;
    --rsqr-primary: #818cf8;
    --rsqr-primary-hover: #6366f1;
    --rsqr-primary-light: rgba(99, 102, 241, 0.2);
    --rsqr-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --rsqr-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --rsqr-shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --rsqr-shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

/* ============================================
   BASE CONTAINER
   ============================================ */
.rsqr-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--rsqr-text);
    background: var(--rsqr-bg);
    transition: var(--rsqr-transition);
}

/* ============================================
   DARK MODE TOGGLE
   ============================================ */
.rsqr-dark-mode-toggle {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 20px;
}

.rsqr-theme-btn {
    background: var(--rsqr-card-bg);
    border: 1px solid var(--rsqr-border);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.4rem;
    transition: var(--rsqr-transition);
    box-shadow: var(--rsqr-shadow);
    position: relative;
    overflow: hidden;
}

.rsqr-theme-btn:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: var(--rsqr-shadow-lg);
}

.rsqr-theme-btn:active {
    transform: scale(0.95);
}

.rsqr-icon-dark {
    display: none;
}

.rsqr-dark-mode .rsqr-icon-light {
    display: none;
}

.rsqr-dark-mode .rsqr-icon-dark {
    display: inline;
}

/* ============================================
   MAIN CARD
   ============================================ */
.rsqr-card {
    background: var(--rsqr-card-bg);
    border-radius: var(--rsqr-radius);
    padding: 40px;
    box-shadow: var(--rsqr-shadow-xl);
    border: 1px solid var(--rsqr-border);
    transition: var(--rsqr-transition);
    position: relative;
    overflow: hidden;
}

.rsqr-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--rsqr-primary), var(--rsqr-secondary));
}

/* ============================================
   HEADER
   ============================================ */
.rsqr-header {
    text-align: center;
    margin-bottom: 32px;
}

.rsqr-title {
    font-size: 2.25rem;
    font-weight: 800;
    margin: 0 0 12px 0;
    background: linear-gradient(135deg, var(--rsqr-primary), var(--rsqr-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.025em;
}

.rsqr-subtitle {
    font-size: 1.125rem;
    color: var(--rsqr-text-secondary);
    margin: 0;
    font-weight: 400;
}

/* ============================================
   TABS NAVIGATION
   ============================================ */
.rsqr-tabs-nav {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--rsqr-border);
    padding-bottom: 2px;
}

.rsqr-tab-btn {
    padding: 12px 20px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--rsqr-text-secondary);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: var(--rsqr-transition);
    position: relative;
    margin-bottom: -2px;
}

.rsqr-tab-btn:hover {
    color: var(--rsqr-primary);
}

.rsqr-tab-btn.active {
    color: var(--rsqr-primary);
    border-bottom-color: var(--rsqr-primary);
}

/* ============================================
   TAB CONTENT
   ============================================ */
.rsqr-tab-content {
    display: none;
    animation: rsqr-fade-in 0.4s ease-out;
}

.rsqr-tab-content.active {
    display: block;
}

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

/* ============================================
   INPUT SECTION
   ============================================ */
.rsqr-input-section {
    margin-bottom: 24px;
}

.rsqr-label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.95rem;
    color: var(--rsqr-text);
}

.rsqr-input-wrapper {
    position: relative;
}

.rsqr-input {
    width: 100%;
    padding: 16px 20px;
    padding-right: 100px;
    font-size: 1rem;
    border: 2px solid var(--rsqr-border);
    border-radius: var(--rsqr-radius-sm);
    background: var(--rsqr-bg);
    color: var(--rsqr-text);
    transition: var(--rsqr-transition);
    box-sizing: border-box;
}

.rsqr-input:focus {
    outline: none;
    border-color: var(--rsqr-primary);
    box-shadow: 0 0 0 4px var(--rsqr-primary-light);
}

.rsqr-input::placeholder {
    color: var(--rsqr-text-secondary);
    opacity: 0.6;
}

.rsqr-char-count {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.8rem;
    color: var(--rsqr-text-secondary);
    background: var(--rsqr-card-bg);
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: 500;
    border: 1px solid var(--rsqr-border);
}

.rsqr-input-error {
    color: var(--rsqr-error);
    font-size: 0.875rem;
    margin-top: 8px;
    padding: 10px 14px;
    background: rgba(239, 68, 68, 0.1);
    border-radius: var(--rsqr-radius-sm);
    border-left: 4px solid var(--rsqr-error);
    display: none;
}

/* ============================================
   OPTIONS PANEL
   ============================================ */
.rsqr-options-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

.rsqr-option {
    display: flex;
    flex-direction: column;
}

.rsqr-option-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--rsqr-text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.rsqr-select {
    padding: 12px 16px;
    border: 2px solid var(--rsqr-border);
    border-radius: var(--rsqr-radius-sm);
    background: var(--rsqr-bg);
    color: var(--rsqr-text);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--rsqr-transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.rsqr-select:focus {
    outline: none;
    border-color: var(--rsqr-primary);
}

.rsqr-color-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.rsqr-color-input {
    width: 52px;
    height: 52px;
    border: 2px solid var(--rsqr-border);
    border-radius: var(--rsqr-radius-sm);
    cursor: pointer;
    background: none;
    padding: 3px;
    transition: var(--rsqr-transition);
}

.rsqr-color-input:hover {
    border-color: var(--rsqr-primary);
    transform: scale(1.05);
}

.rsqr-color-value {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--rsqr-text-secondary);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.05em;
}

/* Logo Upload */
.rsqr-logo-upload {
    grid-column: 1 / -1;
}

.rsqr-file-input {
    display: none;
}

.rsqr-file-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px;
    border: 2px dashed var(--rsqr-border);
    border-radius: var(--rsqr-radius-sm);
    cursor: pointer;
    transition: var(--rsqr-transition);
    color: var(--rsqr-text-secondary);
    font-weight: 500;
}

.rsqr-file-label:hover {
    border-color: var(--rsqr-primary);
    background: var(--rsqr-primary-light);
    color: var(--rsqr-primary);
}

.rsqr-logo-preview {
    margin-top: 12px;
    display: none;
    align-items: center;
    gap: 12px;
}

.rsqr-logo-preview img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    border-radius: var(--rsqr-radius-sm);
    border: 2px solid var(--rsqr-border);
    padding: 4px;
    background: var(--rsqr-bg);
}

.rsqr-remove-logo {
    color: var(--rsqr-error);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
}

/* ============================================
   GENERATE BUTTON
   ============================================ */
.rsqr-generate-btn {
    width: 100%;
    padding: 18px 32px;
    font-size: 1.1rem;
    font-weight: 700;
    color: #ffffff;
    background: linear-gradient(135deg, var(--rsqr-primary), var(--rsqr-secondary));
    border: none;
    border-radius: var(--rsqr-radius-sm);
    cursor: pointer;
    transition: var(--rsqr-transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 24px;
}

.rsqr-generate-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
}

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

.rsqr-generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

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

.rsqr-generate-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.rsqr-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #ffffff;
    animation: rsqr-spin 0.8s linear infinite;
}

@keyframes rsqr-spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   RESULT CONTAINER
   ============================================ */
.rsqr-result-container {
    display: none;
    animation: rsqr-fade-in-up 0.5s ease-out;
}

@keyframes rsqr-fade-in-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Loading State */
.rsqr-loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--rsqr-text-secondary);
}

.rsqr-loading-spinner {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border: 4px solid var(--rsqr-border);
    border-top-color: var(--rsqr-primary);
    border-radius: 50%;
    animation: rsqr-spin 1s linear infinite;
}

/* QR Preview */
.rsqr-preview-wrapper {
    text-align: center;
    margin-bottom: 24px;
}

.rsqr-qr-frame {
    display: inline-block;
    padding: 32px;
    background: #ffffff;
    border-radius: var(--rsqr-radius);
    box-shadow: var(--rsqr-shadow-lg);
    border: 1px solid var(--rsqr-border);
    position: relative;
}

.rsqr-qrcode {
    display: flex;
    justify-content: center;
    align-items: center;
    min-width: 200px;
    min-height: 200px;
}

.rsqr-qrcode img {
    display: block;
    max-width: 100%;
    height: auto;
}

/* Logo overlay on QR */
.rsqr-qr-logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20%;
    height: 20%;
    background: #ffffff;
    border-radius: 8px;
    padding: 4px;
    object-fit: contain;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.rsqr-preview-hint {
    margin-top: 16px;
    font-size: 0.9rem;
    color: var(--rsqr-text-secondary);
    font-weight: 500;
}

/* ============================================
   ACTION BUTTONS
   ============================================ */
.rsqr-actions {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.rsqr-action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px;
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    border-radius: var(--rsqr-radius-sm);
    cursor: pointer;
    transition: var(--rsqr-transition);
    box-shadow: var(--rsqr-shadow);
}

.rsqr-btn-icon {
    font-size: 1.5rem;
}

.rsqr-download-btn {
    background: linear-gradient(135deg, var(--rsqr-success), #059669);
    color: #ffffff;
}

.rsqr-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.rsqr-copy-btn {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: #ffffff;
}

.rsqr-copy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.rsqr-reset-btn {
    background: var(--rsqr-bg);
    color: var(--rsqr-text);
    border: 2px solid var(--rsqr-border);
}

.rsqr-reset-btn:hover {
    background: var(--rsqr-border);
    transform: translateY(-2px);
}

/* ============================================
   TRUST BADGES
   ============================================ */
.rsqr-trust-badges {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.rsqr-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: var(--rsqr-card-bg);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--rsqr-text-secondary);
    box-shadow: var(--rsqr-shadow);
    border: 1px solid var(--rsqr-border);
    transition: var(--rsqr-transition);
}

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

.rsqr-badge-icon {
    font-size: 1.1rem;
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.rsqr-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--rsqr-text);
    color: #ffffff;
    padding: 16px 28px;
    border-radius: var(--rsqr-radius-sm);
    font-weight: 600;
    box-shadow: var(--rsqr-shadow-xl);
    z-index: 9999;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    display: flex;
    align-items: center;
    gap: 10px;
}

.rsqr-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.rsqr-toast.success {
    background: var(--rsqr-success);
}

.rsqr-toast.error {
    background: var(--rsqr-error);
}

/* ============================================
   SEO CONTENT STYLES
   ============================================ */
.rsqr-seo-content {
    max-width: 800px;
    margin: 80px auto 0;
    padding: 0 20px;
    color: var(--rsqr-text);
}

.rsqr-seo-content h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--rsqr-primary), var(--rsqr-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.rsqr-seo-content h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-top: 48px;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--rsqr-border);
    color: var(--rsqr-text);
}

.rsqr-seo-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 16px;
    color: var(--rsqr-primary);
}

.rsqr-seo-content p {
    margin-bottom: 20px;
    line-height: 1.8;
    color: var(--rsqr-text-secondary);
    font-size: 1.05rem;
}

.rsqr-seo-content ul,
.rsqr-seo-content ol {
    margin-bottom: 24px;
    padding-left: 28px;
}

.rsqr-seo-content li {
    margin-bottom: 12px;
    line-height: 1.7;
    color: var(--rsqr-text-secondary);
}

.rsqr-seo-content a {
    color: var(--rsqr-primary);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    transition: var(--rsqr-transition);
}

.rsqr-seo-content a:hover {
    border-bottom-color: var(--rsqr-primary);
}

.rsqr-faq-item {
    background: var(--rsqr-card-bg);
    border-radius: var(--rsqr-radius-sm);
    padding: 24px;
    margin-bottom: 20px;
    border: 1px solid var(--rsqr-border);
    box-shadow: var(--rsqr-shadow-sm);
}

.rsqr-faq-item h3 {
    margin: 0 0 12px 0;
    color: var(--rsqr-primary);
    font-size: 1.1rem;
}

.rsqr-faq-item p {
    margin: 0;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 640px) {
    .rsqr-card {
        padding: 24px;
    }
    
    .rsqr-title {
        font-size: 1.75rem;
    }
    
    .rsqr-subtitle {
        font-size: 1rem;
    }
    
    .rsqr-tabs-nav {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .rsqr-tab-btn {
        white-space: nowrap;
        padding: 10px 16px;
        font-size: 0.875rem;
    }
    
    .rsqr-options-grid {
        grid-template-columns: 1fr;
    }
    
    .rsqr-actions {
        grid-template-columns: 1fr;
    }
    
    .rsqr-action-btn {
        flex-direction: row;
        justify-content: center;
    }
    
    .rsqr-trust-badges {
        gap: 8px;
    }
    
    .rsqr-badge {
        font-size: 0.75rem;
        padding: 8px 12px;
    }
    
    .rsqr-seo-content h1 {
        font-size: 1.875rem;
    }
    
    .rsqr-seo-content h2 {
        font-size: 1.375rem;
    }
}

/* ============================================
   ACCESSIBILITY & UTILITIES
   ============================================ */
.rsqr-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 visible for keyboard navigation */
.rsqr-input:focus-visible,
.rsqr-select:focus-visible,
.rsqr-tab-btn:focus-visible,
.rsqr-generate-btn:focus-visible,
.rsqr-action-btn:focus-visible,
.rsqr-theme-btn:focus-visible {
    outline: 3px solid var(--rsqr-primary);
    outline-offset: 2px;
}

/* Reduced motion preference */
@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) {
    .rsqr-card,
    .rsqr-input,
    .rsqr-select,
    .rsqr-action-btn {
        border: 2px solid currentColor;
    }
}

/* Print styles */
@media print {
    .rsqr-dark-mode-toggle,
    .rsqr-tabs-nav,
    .rsqr-generate-btn,
    .rsqr-actions,
    .rsqr-trust-badges {
        display: none !important;
    }
    
    .rsqr-card {
        box-shadow: none;
        border: 2px solid #000;
    }
}