/* Consolidated CSS for Vercel Production */

/* CSS Variables for consistent theming */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-glass: rgba(255, 255, 255, 0.1);
    
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    --border-color: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-secondary: linear-gradient(135deg, var(--accent-color), var(--primary-color));
    --gradient-bg: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
    
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-2xl: 1.5rem;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Font Faces - Using local font files */
@font-face {
    font-family: 'SutonnyMJ';
    src: url('/fonts/sutonnymj.ttf') format('truetype'),
         url('./fonts/sutonnymj.ttf') format('truetype'),
         url('../fonts/sutonnymj.ttf') format('truetype'),
         local('SutonnyMJ'), local('SutonnyMJ Regular');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Kalpurush';
    src: url('/fonts/kalpurush.ttf') format('truetype'),
         url('./fonts/kalpurush.ttf') format('truetype'),
         url('../fonts/kalpurush.ttf') format('truetype'),
         local('Kalpurush');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Montserrat';
    src: url('/fonts/montserrat.ttf') format('truetype'),
         url('./fonts/montserrat.ttf') format('truetype'),
         url('../fonts/montserrat.ttf') format('truetype'),
         local('Montserrat');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Completely disable browser default button behaviors */
button,
input[type="button"],
input[type="submit"],
.btn {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    border: none;
    outline: none;
    transform: none !important;
    scale: 1 !important;
    transform-origin: center !important;
}

button:active,
input[type="button"]:active,
input[type="submit"]:active,
.btn:active {
    transform: translateY(-1px) !important;
    scale: 1 !important;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Montserrat', 'Kalpurush', 'Noto Serif Bengali', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--gradient-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* Background Animation */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: var(--gradient-primary);
    opacity: 0.1;
    animation: float 20s infinite linear;
}

.shape-1 {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
    animation-duration: 25s;
}

.shape-2 {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 15%;
    animation-delay: -5s;
    animation-duration: 30s;
}

.shape-3 {
    width: 60px;
    height: 60px;
    top: 80%;
    left: 20%;
    animation-delay: -10s;
    animation-duration: 20s;
}

.shape-4 {
    width: 100px;
    height: 100px;
    top: 30%;
    right: 30%;
    animation-delay: -15s;
    animation-duration: 35s;
}

.shape-5 {
    width: 140px;
    height: 140px;
    top: 70%;
    left: 60%;
    animation-delay: -20s;
    animation-duration: 28s;
}

@keyframes float {
    0% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
    100% {
        transform: translateY(0px) rotate(360deg);
    }
}

/* Main Container */
.main-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

/* Header Styles */
.header {
    padding: 1rem 0;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    animation: pulse 2s infinite;
    box-shadow: var(--shadow-lg);
}

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

@keyframes pulse {
    0%, 100% {
        transform: translateY(0);
        box-shadow: var(--shadow-lg);
    }
    50% {
        transform: translateY(-2px);
        box-shadow: var(--shadow-xl);
    }
}

.main-title {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    line-height: 1.2;
}

.subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0;
    font-weight: 400;
}

.header-info {
    text-align: right;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.5rem;
}

.btn-refresh {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    box-shadow: var(--shadow-md);
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    min-height: 36px;
    position: relative;
    overflow: visible;
}

.btn-refresh:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #059669, #047857);
}

.btn-refresh .btn-icon {
    width: 16px;
    height: 16px;
}

.btn-refresh .btn-text {
    font-size: 0.8rem;
}

.powered-by {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.author-name {
    color: var(--accent-color);
    font-weight: 600;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 3rem 0;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.converter-container {
    max-width: 1000px;
    width: 100%;
    padding: 0 2rem;
}

/* Converter Card */
.converter-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    position: relative;
}

.converter-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.5;
}

.converter-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 32px 64px -12px rgba(0, 0, 0, 0.3);
    border-color: var(--border-hover);
}

.card-header {
    padding: 2rem 2rem 1rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.card-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-secondary);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
}

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

.card-title h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.5rem 0;
    line-height: 1.3;
}

.card-title p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.5;
}

.card-body {
    padding: 0 2rem 2rem;
}

/* Upload Section */
.upload-section {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

/* Image Preview Section */
.image-preview-section {
    margin-bottom: 2rem;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
}

.preview-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.preview-icon {
    font-size: 1.2rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    min-height: 36px;
}

.image-preview-container {
    position: relative;
    padding: 0.75rem;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 120px;
    background: var(--bg-tertiary);
}

.image-preview {
    max-width: 100%;
    max-height: 200px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    object-fit: contain;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.image-preview:hover {
    box-shadow: var(--shadow-xl);
}

.image-overlay {
    position: absolute;
    bottom: 1.5rem;
    left: 1.5rem;
    right: 1.5rem;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius-md);
    padding: 0.75rem 1rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-preview-container:hover .image-overlay {
    opacity: 1;
}

.image-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: white;
    font-size: 0.85rem;
}

.file-name {
    font-weight: 600;
    color: var(--text-primary);
}

.file-size {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.file-input-wrapper {
    position: relative;
    flex: 1;
    min-width: 200px;
}

.file-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.file-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: var(--bg-card);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-weight: 500;
    color: var(--text-secondary);
    min-height: 60px;
}

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

.upload-icon {
    width: 24px;
    height: 24px;
    color: currentColor;
}

.upload-icon svg {
    width: 100%;
    height: 100%;
}

.upload-text {
    font-size: 0.95rem;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius-lg);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    min-height: 48px;
    justify-content: center;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn:active {
    transform: translateY(-1px) !important;
}

/* Completely prevent any scaling on buttons */
.btn,
.btn *,
.btn::before,
.btn::after {
    transform: none !important;
}

.btn:hover,
.btn:focus,
.btn:active {
    transform: translateY(-2px) !important;
}

.btn:active {
    transform: translateY(-1px) !important;
}

/* Override ALL possible button scaling */
button,
input[type="button"],
input[type="submit"],
.btn,
.btn-primary,
.btn-secondary,
.btn-success,
.btn-refresh,
.btn-ai-correction {
    transform: none !important;
}

button:hover,
input[type="button"]:hover,
input[type="submit"]:hover,
.btn:hover,
.btn-primary:hover,
.btn-secondary:hover,
.btn-success:hover,
.btn-refresh:hover,
.btn-ai-correction:hover {
    transform: translateY(-2px) !important;
}

button:active,
input[type="button"]:active,
input[type="submit"]:active,
.btn:active,
.btn-primary:active,
.btn-secondary:active,
.btn-success:active,
.btn-refresh:active,
.btn-ai-correction:active {
    transform: translateY(-1px) !important;
}

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

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

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

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.btn-success {
    background: var(--gradient-secondary);
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-text {
    font-size: 0.9rem;
}

.btn-loading {
    display: none;
    align-items: center;
    justify-content: center;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Text Sections */
.text-section {
    margin-bottom: 2rem;
}

.section-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.label-icon {
    font-size: 1.1rem;
}

.textarea-wrapper {
    position: relative;
}

.text-input {
    width: 100%;
    min-height: 200px;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    color: var(--text-primary);
    font-size: 1rem;
    line-height: 1.6;
    resize: vertical;
    transition: all var(--transition-normal);
    font-family: inherit;
}

.text-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    background: var(--bg-tertiary);
}

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

.unicode-textarea {
    font-family: 'Kalpurush', 'Noto Serif Bengali', 'SolaimanLipi', 'Montserrat', sans-serif !important;
    font-feature-settings: "liga" 1, "kern" 1;
    text-rendering: optimizeLegibility;
    font-size: 18px;
    line-height: 1.8;
}

.bijoy-textarea {
    font-family: 'SutonnyMJ', 'Kalpurush', 'Noto Serif Bengali', 'SolaimanLipi', 'Montserrat', sans-serif !important;
    font-feature-settings: "liga" 1, "kern" 1;
    text-rendering: optimizeLegibility;
    font-size: 18px;
    line-height: 1.8;
}

.textarea-decoration {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.text-input:focus + .textarea-decoration {
    opacity: 1;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

/* AI Correction Button */
.btn-ai-correction {
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    color: white;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-ai-correction:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #ff5252, #d63031);
}

.btn-ai-correction.processing {
    background: linear-gradient(135deg, #74b9ff, #0984e3);
    animation: pulse 1.5s infinite;
    transform: translateY(-2px) !important;
}

/* Download Buttons */
.download-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.btn-reconvert {
    flex: 1;
    min-width: 180px;
}

.btn-download {
    flex: 1;
    min-width: 150px;
}

/* Status Message */
.status-message {
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius-lg);
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 1rem;
    transition: all var(--transition-normal);
}

.status-message.processing {
    background: rgba(6, 182, 212, 0.1);
    color: var(--accent-color);
    border: 1px solid rgba(6, 182, 212, 0.2);
}

.status-message.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Toast Notifications */
.toast {
    position: fixed;
    top: 2rem;
    right: 2rem;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    transform: translateX(400px);
    transition: transform 0.3s ease;
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--error-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .header-info {
        flex-direction: row;
        align-items: center;
        justify-content: center;
        gap: 1rem;
    }
    
    .btn-refresh {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
        min-height: 32px;
    }
    
    .btn-refresh .btn-text {
        font-size: 0.75rem;
    }
    
    .main-title {
        font-size: 2rem;
    }
    
    .converter-container {
        padding: 0 1rem;
    }
    
    .card-header {
        padding: 1.5rem 1.5rem 1rem;
        flex-direction: column;
        text-align: center;
    }
    
    .card-body {
        padding: 0 1.5rem 1.5rem;
    }
    
    .upload-section {
        flex-direction: column;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .download-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .image-preview-container {
        padding: 0.5rem;
        min-height: 100px;
    }
    
    .image-preview {
        max-height: 150px;
    }
    
    .preview-header {
        padding: 0.75rem 1rem;
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }
    
    .preview-title {
        font-size: 0.9rem;
    }
    
    .image-overlay {
        position: static;
        margin-top: 1rem;
        opacity: 1;
        background: var(--bg-card);
        color: var(--text-primary);
    }
    
    .image-info {
        flex-direction: column;
        gap: 0.25rem;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .header-info {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .btn-refresh {
        padding: 0.35rem 0.7rem;
        font-size: 0.75rem;
        min-height: 30px;
    }
    
    .btn-refresh .btn-text {
        font-size: 0.7rem;
    }
    
    .main-title {
        font-size: 1.75rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .card-header {
        padding: 1rem;
    }
    
    .card-body {
        padding: 0 1rem 1rem;
    }
    
    .text-input {
        padding: 1rem;
        font-size: 0.9rem;
    }
    
    .image-preview-container {
        padding: 0.5rem;
    }
    
    .image-preview {
        max-height: 120px;
    }
    
    .preview-header {
        padding: 0.5rem 0.75rem;
    }
    
    .btn-sm {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
        min-height: 32px;
    }
}

/* Dark mode optimizations */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #0a0a0a;
        --bg-secondary: #111111;
        --bg-tertiary: #1a1a1a;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --border-color: rgba(255, 255, 255, 0.3);
        --text-secondary: #cccccc;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .shape {
        animation: none;
    }
    
    .logo-icon {
        animation: none;
    }
}

/* Print styles */
@media print {
    .bg-animation,
    .header,
    .action-buttons {
        display: none !important;
    }
    
    .converter-card {
        box-shadow: none;
        border: 1px solid #ccc;
        background: white;
        color: black;
    }
    
    .text-input {
        background: white;
        color: black;
        border: 1px solid #ccc;
    }
}