:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #6366f1;
    --accent-hover: #4f46e5;
    --gradient-1: #8b5cf6;
    --gradient-2: #ec4899;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow-x: hidden;
    padding: 20px;
}

/* Arka Plan Yuvarlak Renk Efektleri (Blobs) */
.background-blobs {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    filter: blur(90px);
    border-radius: 50%;
    opacity: 0.35;
}

.blob-1 {
    width: 350px;
    height: 350px;
    background: var(--gradient-1);
    top: -50px;
    left: -50px;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: var(--gradient-2);
    bottom: -100px;
    right: -100px;
}

/* Ana Konteyner */
.container {
    width: 100%;
    max-width: 680px;
    text-align: center;
}

/* Başlık */
.header .badge {
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(99, 102, 241, 0.3);
    display: inline-block;
    margin-bottom: 15px;
}

.header h1 {
    font-size: 2.8rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 12px;
    background: linear-gradient(to right, #fff, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 35px;
}

/* Platform Kartları */
.platforms {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
}

.platform-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 10px 18px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    backdrop-filter: blur(10px);
}

.platform-card.instagram i { color: #e1306c; }
.platform-card.x-twitter i { color: #fff; }
.platform-card.facebook i { color: #1877f2; }

/* Form Kutusu */
.downloader-box {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 20px;
    backdrop-filter: blur(16px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 18px;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.input-group input {
    width: 100%;
    padding: 16px 110px 16px 48px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    color: #fff;
    font-size: 0.95rem;
    outline: none;
    transition: all 0.3s ease;
}

.input-group input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.paste-btn {
    position: absolute;
    right: 8px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 14px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: background 0.2s;
}

.paste-btn:hover {
    background: rgba(255, 255, 255, 0.15);
}

.download-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--gradient-1), var(--accent-color));
    border: none;
    border-radius: 14px;
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
}

.download-btn:active {
    transform: translateY(0);
}

/* Durum Alanı */
.status-container {
    margin-top: 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Mobil Uyum */
@media (max-width: 576px) {
    .header h1 { font-size: 2rem; }
    .platforms { flex-wrap: wrap; }
    .platform-card { font-size: 0.8rem; }
}