/* ========================================
   QR Code Decoder - Stylesheet
   ======================================== */

:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #1e293b;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;

    /* Backgrounds */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: rgba(30, 41, 59, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.05);

    /* Text */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Borders */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-radius: 16px;
    --border-radius-sm: 8px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* ========================================
   Base Styles
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(99, 102, 241, 0.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========================================
   Language Selector
   ======================================== */

.language-selector-wrapper {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 1rem;
}

.language-selector {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition-fast);
    appearance: none;
    -webkit-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='%2394a3b8' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

.language-selector:hover {
    border-color: var(--primary);
    background-color: rgba(99, 102, 241, 0.1);
}

.language-selector:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.language-selector option {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.5rem;
}

/* RTL Support for Arabic */
html[dir="rtl"] {
    direction: rtl;
}

html[dir="rtl"] .language-selector-wrapper {
    justify-content: flex-start;
}

html[dir="rtl"] .language-selector {
    background-position: left 0.75rem center;
    padding-right: 1rem;
    padding-left: 2.5rem;
}

html[dir="rtl"] .result-header {
    flex-direction: row-reverse;
}

html[dir="rtl"] .logo {
    flex-direction: row-reverse;
}

html[dir="rtl"] .btn {
    flex-direction: row-reverse;
}

html[dir="rtl"] .btn-close {
    right: auto;
    left: 1rem;
}

/* ========================================
   Header
   ======================================== */

.header {
    text-align: center;
    margin-bottom: 3rem;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--shadow-glow);
}

.logo-icon svg {
    width: 28px;
    height: 28px;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ========================================
   Main Content
   ======================================== */

.main {
    flex: 1;
}

/* Upload Section */
.upload-section {
    position: relative;
    margin-bottom: 2rem;
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    text-align: center;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    transition: var(--transition-normal);
    cursor: pointer;
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
}

.upload-area.drag-over {
    box-shadow: var(--shadow-glow);
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.upload-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 0.5rem;
}

.upload-icon svg {
    width: 32px;
    height: 32px;
}

.upload-content h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.upload-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.file-types {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Preview Area */
/* Ensure hidden attribute works */
[hidden] {
    display: none !important;
}

.preview-area {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    background: var(--bg-secondary);
    align-items: center;
    justify-content: center;
    min-height: 200px;
    max-height: 400px;
}

.preview-area:not([hidden]) {
    display: flex;
}

.preview-area img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
}

.btn-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.btn-close:hover {
    background: var(--error);
    transform: scale(1.1);
}

.btn-close svg {
    width: 20px;
    height: 20px;
}

/* ========================================
   Result Section
   ======================================== */

.result-section {
    margin-bottom: 2rem;
    animation: slideUp 0.3s ease;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

.result-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.result-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.result-icon.success {
    background: var(--success);
}

.result-icon.error {
    background: var(--error);
}

.result-icon svg {
    width: 24px;
    height: 24px;
}

.result-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.result-text-wrapper {
    background: var(--bg-primary);
    border-radius: var(--border-radius-sm);
    padding: 1rem;
    margin-bottom: 1rem;
    word-break: break-all;
}

.result-text-wrapper p {
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.95rem;
    color: var(--primary-light);
}

.result-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    border: none;
    font-family: inherit;
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
}

/* ========================================
   Loading
   ======================================== */

.loading {
    text-align: center;
    padding: 2rem;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

.loading p {
    color: var(--text-secondary);
}

/* ========================================
   Features
   ======================================== */

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: auto;
    padding-top: 3rem;
}

.feature {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-glass);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.feature:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.feature h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    text-align: center;
    padding: 2rem 0 1rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ========================================
   Toast Notification
   ======================================== */

.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    z-index: 1000;
    opacity: 0;
    transition: var(--transition-normal);
}

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

.toast.success {
    border-color: var(--success);
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 768px) {
    .container {
        padding: 1.5rem;
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .upload-area {
        padding: 2rem 1.5rem;
    }

    .features {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .result-actions {
        flex-direction: column;
    }

    .result-actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }

    .logo-icon {
        width: 40px;
        height: 40px;
    }

    .upload-icon {
        width: 48px;
        height: 48px;
    }

    .upload-content h2 {
        font-size: 1.1rem;
    }
}