/* Reset ve Genel Stiller */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-purple: #8B5CF6;
    --primary-pink: #EC4899;
    --success-green: #10B981;
    --text-dark: #1F2937;
    --text-light: #6B7280;
    --bg-light: #F9FAFB;
    --bg-white: #FFFFFF;
    --border-color: #E5E7EB;
    --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);
    --gradient-primary: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-pink) 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.language select {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-white);
    color: var(--text-dark);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.language select:hover {
    border-color: var(--primary-purple);
}

/* Main Content */
.main {
    padding: 2rem 0;
}

/* Hero Section */
.hero {
    background: var(--gradient-primary);
    border-radius: 24px;
    padding: 3rem 2rem;
    text-align: center;
    color: white;
    margin-bottom: 3rem;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
    margin-bottom: 2rem;
}

/* Tab Menu */
.tab-menu {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.tab-btn.active {
    background: var(--bg-white);
    color: var(--primary-purple);
    border-color: var(--bg-white);
}

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

/* Input Section */
.input-section {
    display: flex;
    gap: 12px;
    max-width: 800px;
    margin: 0 auto;
}

.input-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.url-input {
    flex: 1;
    padding: 16px 20px;
    border: none;
    font-size: 1rem;
    color: var(--text-dark);
    outline: none;
}

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

.paste-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 20px;
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.paste-btn:hover {
    color: var(--primary-purple);
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    background: var(--success-green);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
}

.download-btn:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: 0 12px 20px -5px rgba(16, 185, 129, 0.4);
}

/* Loading Spinner */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-top: 2rem;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Error Message */
.error-message {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(239, 68, 68, 0.2);
    border: 2px solid rgba(239, 68, 68, 0.4);
    border-radius: 12px;
    padding: 16px 24px;
    margin-top: 2rem;
    color: white;
}

.error-message svg {
    flex-shrink: 0;
}

/* Preview Section */
.preview-section {
    background: var(--bg-white);
    border-radius: 24px;
    padding: 2rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-md);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.preview-content {
    margin-bottom: 2rem;
}

/* Preview Cards */
.preview-card {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.preview-media {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.preview-media img,
.preview-media video {
    width: 100%;
    height: auto;
    display: block;
}

.preview-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.info-item {
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 12px;
}

.info-label {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.info-value {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
}

/* Profile Preview */
.profile-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.profile-avatar {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--primary-purple);
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    transition: transform 0.3s ease;
}

.profile-avatar:hover {
    transform: scale(1.05);
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-details {
    text-align: center;
}

.profile-username {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.profile-fullname {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.profile-stats {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-top: 1rem;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-purple);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Download Options */
.download-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.quality-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.quality-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 1rem;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.quality-btn:hover {
    border-color: var(--primary-purple);
    background: rgba(139, 92, 246, 0.05);
}

.quality-label {
    font-weight: 600;
    color: var(--text-dark);
}

.quality-size {
    font-size: 0.875rem;
    color: var(--text-light);
}

.download-action {
    display: flex;
    justify-content: center;
}

.download-action .download-btn {
    min-width: 200px;
}

/* Features Section */
.features {
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* How to Section */
.how-to {
    background: var(--bg-white);
    border-radius: 24px;
    padding: 3rem 2rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-md);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.step {
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.step h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.step p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 0.7;
}

.disclaimer {
    font-size: 0.875rem;
    opacity: 0.7;
    text-align: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .tab-menu {
        gap: 8px;
    }

    .tab-btn {
        padding: 10px 16px;
        font-size: 0.9rem;
    }

    .tab-btn span {
        display: none;
    }

    .input-section {
        flex-direction: column;
    }

    .download-btn {
        width: 100%;
        justify-content: center;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 1rem;
    }

    .container {
        padding: 0 15px;
    }

    .features-grid,
    .steps {
        grid-template-columns: 1fr;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }