@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;600;800&display=swap');

:root {
    --bg-color: #0a0b10;
    --card-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --primary: #4f46e5;
    --primary-glow: rgba(79, 70, 229, 0.4);
    --secondary: #818cf8;
    --accents: #c084fc;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow-x: hidden;
    min-height: 100vh;
}

.bg-glow {
    position: fixed;
    top: -10%;
    right: -10%;
    width: 60vw;
    height: 60vh;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    filter: blur(80px);
    z-index: -1;
    opacity: 0.5;
}

header {
    padding: 2rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(to right, #fff, var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.lang-switcher {
    position: relative;
    cursor: pointer;
    padding: 0.5rem 1rem;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    background: var(--card-bg);
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.lang-switcher:hover {
    border-color: var(--primary);
    color: var(--text-main);
}

.lang-dropdown {
    opacity: 0;
    visibility: hidden;
    position: absolute;
    top: 100%;
    right: 0;
    width: 160px;
    background: rgba(26, 28, 42, 0.98);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    z-index: 1000;
    max-height: 400px;
    overflow-y: auto;
    padding: 10px 0.5rem 0.5rem;
    transition: all 0.15s ease;
    pointer-events: none;
}

.lang-switcher:hover .lang-dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Custom scrollbar for dropdown */
.lang-dropdown::-webkit-scrollbar {
    width: 6px;
}
.lang-dropdown::-webkit-scrollbar-thumb {
    background: var(--glass-border);
    border-radius: 3px;
}

.lang-option {
    padding: 0.8rem 1rem;
    cursor: pointer;
    transition: var(--transition);
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.lang-option:hover {
    background: var(--primary);
    color: white;
}

/* RTL Support */
[dir="rtl"] {
    text-align: right;
}

[dir="rtl"] .header-right {
    margin-left: 0;
    margin-right: auto;
}

[dir="rtl"] .lang-dropdown {
    right: auto;
    left: 0;
}

.settings-btn {
    background: none;
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 0.5rem;
    cursor: pointer;
    font-size: 1.2rem;
    transition: var(--transition);
}

.settings-btn:hover {
    background: var(--card-bg);
    transform: rotate(45deg);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
    padding: 0.8rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

/* Modal Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal {
    background: #161821;
    border: 1px solid var(--glass-border);
    padding: 2rem;
    border-radius: 20px;
    width: 90%;
    max-width: 400px;
    animation: modalIn 0.3s ease-out;
}

@keyframes modalIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-input {
    width: 100%;
    background: var(--bg-color);
    border: 1px solid var(--glass-border);
    padding: 0.8rem;
    color: white;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* AI Corrections Styling */
.correction-item {
    margin-top: 1rem;
}

.correction-btn {
    font-size: 0.8rem;
    color: var(--primary);
    background: none;
    border: 1px solid var(--primary);
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.correction-btn:hover {
    background: var(--primary);
    color: white;
}

.correction-text {
    margin-top: 0.5rem;
    padding: 1rem;
    background: rgba(79, 70, 229, 0.1);
    border-radius: 8px;
    font-size: 0.9rem;
    display: none;
    border-left: 2px solid var(--primary);
}

main {
    max-width: 1200px;
    margin: 4rem auto;
    padding: 0 1rem;
}

.hero {
    text-align: center;
    margin-bottom: 5rem;
}

h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.dropzone {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    background: var(--card-bg);
    border: 2px dashed var(--glass-border);
    border-radius: var(--radius);
    padding: 4rem 2rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
}

.dropzone:hover {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-5px);
    box-shadow: 0 10px 40px -10px var(--primary-glow);
}

.dropzone-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, var(--primary), var(--accents));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary:hover {
    background: var(--secondary);
    transform: scale(1.02);
}

.results-section {
    margin-top: 4rem;
    display: none;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 2rem;
    backdrop-filter: blur(12px);
}

.error-list {
    margin-top: 1.5rem;
}

.error-item {
    border-left: 4px solid #ef4444;
    background: rgba(239, 68, 68, 0.05);
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 4px 12px 12px 4px;
}

.error-title {
    font-weight: 600;
    color: #ef4444;
    margin-bottom: 0.25rem;
}

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

/* Footer Styling */
.footer {
    margin-top: 5rem;
    padding: 4rem 2rem;
    border-top: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    opacity: 0.8;
}

.footer-links a:hover {
    color: var(--primary);
    opacity: 1;
}

@media (max-width: 768px) {
    header { padding: 1.5rem 2rem; }
    h1 { font-size: 2.5rem; }
    .footer-links { gap: 1rem; }
}