:root {
    --primary: #7c3aed;
    --primary-dark: #6d28d9;
    --primary-light: #8b5cf6;
    --secondary: #06b6d4;
    --secondary-dark: #0891b2;
    --accent: #f59e0b;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --bg: #0f172a;
    --bg-card: #1e293b;
    --bg-light: #334155;
    --text: #f1f5f9;
    --text-light: #cbd5e1;
    --text-lighter: #94a3b8;
    --border: #475569;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.2);
    --gradient: linear-gradient(135deg, #7c3aed 0%, #06b6d4 100%);
}

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

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    min-height: 100vh;
    padding: 20px;
    background-image:
        radial-gradient(at 0% 0%, rgba(124, 58, 237, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.15) 0px, transparent 50%);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

.header {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.header::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: var(--gradient);
    border-radius: 2px;
}

.header h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 15px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.header p {
    font-size: 1.3rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.app-container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
    margin-bottom: 40px;
}

@media (max-width: 1024px) {
    .app-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .header h1 {
        font-size: 2.8rem;
    }
}

.card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.4);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 12px;
}

.card-title i {
    font-size: 1.3rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.form-group {
    margin-bottom: 25px;
}

label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--text);
    font-size: 1rem;
}

.file-input-wrapper {
    position: relative;
    border: 2px dashed var(--border);
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    background: rgba(30, 41, 59, 0.5);
    cursor: pointer;
}

.file-input-wrapper:hover {
    border-color: var(--primary);
    background: rgba(124, 58, 237, 0.05);
    transform: scale(1.02);
}

.file-input-wrapper.has-file {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.05);
}

.file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.file-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 15px;
    opacity: 0.8;
}

.file-text {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 5px;
}

.file-hint {
    font-size: 0.95rem;
    color: var(--text-lighter);
}

.file-name {
    margin-top: 15px;
    font-weight: 600;
    color: var(--success);
    font-size: 1rem;
}

.file-formats {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--text-lighter);
}

select, button {
    padding: 16px 20px;
    border: 2px solid var(--border);
    border-radius: 14px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
}

select {
    width: 100%;
    background: var(--bg-light);
    color: var(--text);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23cbd5e1'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 20px;
}

select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
}

.btn {
    border: none;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 24px;
    transition: all 0.3s ease;
    font-size: 1.1rem;
    border-radius: 14px;
    width: 100%;
}

.btn-primary {
    background: var(--gradient);
    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(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(124, 58, 237, 0.4);
}

.btn:disabled {
    background: var(--bg-light);
    color: var(--text-lighter);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.service-info {
    margin: 25px 0;
}

.service-info .message {
    margin: 0;
    border-left: 4px solid var(--primary);
}

.message {
    padding: 18px 22px;
    border-radius: 14px;
    margin: 25px 0;
    display: flex;
    align-items: center;
    gap: 14px;
    border-left: 4px solid transparent;
}

.message.success {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border-left-color: #10b981;
}

.message.error {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-left-color: #ef4444;
}

.message.info {
    background: rgba(6, 182, 212, 0.1);
    color: #06b6d4;
    border-left-color: #06b6d4;
}

.message.warning {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
    border-left-color: #f59e0b;
}

.download-section {
    text-align: center;
    margin-top: 30px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--success);
    color: white;
    padding: 16px 32px;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

.download-btn:hover {
    background: #0da271;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -5px rgba(16, 185, 129, 0.4);
}

.preview-section {
    margin-top: 30px;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.preview-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text);
}

.preview-count {
    background: var(--gradient);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.preview-container {
    max-height: 500px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: var(--bg-light);
}

.preview-item {
    padding: 20px;
    border-bottom: 1px solid var(--border);
    transition: background 0.2s ease;
}

.preview-item:hover {
    background: rgba(255, 255, 255, 0.02);
}

.preview-item:last-child {
    border-bottom: none;
}

.preview-original, .preview-translated {
    padding: 15px;
    background: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border);
    margin-bottom: 12px;
}

.preview-translated.success {
    border-left: 4px solid var(--success);
}

.preview-translated.error {
    border-left: 4px solid var(--error);
}

.preview-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-lighter);
    margin-bottom: 8px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.preview-text {
    font-size: 0.95rem;
    line-height: 1.5;
    word-break: break-word;
}

.preview-placeholder {
    text-align: center;
    padding: 60px 40px;
    color: var(--text-lighter);
}

.preview-placeholder i {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.3;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
    margin-top: 30px;
}

.stat-card {
    background: var(--bg-light);
    padding: 20px 15px;
    border-radius: 14px;
    text-align: center;
    border: 1px solid var(--border);
    transition: transform 0.2s ease;
}

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

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 5px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-lighter);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.loading {
    display: inline-block;
    width: 22px;
    height: 22px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

.hidden {
    display: none;
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Scrollbar styling */
.preview-container::-webkit-scrollbar {
    width: 8px;
}

.preview-container::-webkit-scrollbar-track {
    background: var(--bg-light);
    border-radius: 4px;
}

.preview-container::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

.preview-container::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Responsive design */
@media (max-width: 768px) {
    body {
        padding: 15px;
    }

    .card {
        padding: 25px;
    }

    .header h1 {
        font-size: 2.2rem;
    }

    .header p {
        font-size: 1.1rem;
    }

    .file-input-wrapper {
        padding: 30px 20px;
    }
}

/* Add these styles to the existing CSS file */

.features-section {
    margin-top: 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.feature-item {
    background: var(--bg-light);
    padding: 25px 20px;
    border-radius: 14px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.feature-item:hover::before {
    opacity: 1;
}

.feature-item i {
    font-size: 2.5rem;
    margin-bottom: 15px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-item span {
    display: block;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.feature-item small {
    color: var(--text-lighter);
    font-size: 0.9rem;
}

/* Responsive features grid */
@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
    }

    .feature-item {
        padding: 20px 15px;
    }

    .feature-item i {
        font-size: 2rem;
    }
}

/* Cookie Consent Banner */
.cookie-consent {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 600px;
  background: #222;
  color: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  padding: 16px 20px;
  font-size: 15px;
  z-index: 10000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  animation: fadeIn 0.5s ease-in-out;
}

.cookie-consent a {
  color: #0af;
  text-decoration: underline;
}

.cookie-consent .btn {
  background: #0af;
  color: white;
  border: none;
  border-radius: 6px;
  padding: 8px 16px;
  cursor: pointer;
  font-weight: 600;
}

.cookie-consent .btn:hover {
  background: #08c;
}

.cookie-consent.hidden {
  display: none;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translate(-50%, 20px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}