:root {
    --bg-dark: #0f172a;
    --text-light: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --accent: #8b5cf6;
    --success: #10b981;
    --danger: #ef4444;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Background blob animations */
.background-elements {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}
.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s infinite ease-in-out;
}
.blob-1 {
    width: 400px; height: 400px;
    background: var(--primary);
    top: -100px; left: -100px;
}
.blob-2 {
    width: 300px; height: 300px;
    background: var(--accent);
    bottom: -50px; right: -50px;
    animation-delay: -5s;
}
.blob-3 {
    width: 500px; height: 500px;
    background: var(--accent);
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.3;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-30px) scale(1.05); }
}

/* Glass Panels */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 20px;
}
.glass-panel-flat {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 12px;
    font-family: inherit;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    outline: none;
}
.btn-sm { padding: 8px 16px; font-size: 0.9rem; }
.full-width { width: 100%; }
.primary-btn {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}
.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.6);
}
.secondary-btn {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}
.secondary-btn:hover { background: rgba(255, 255, 255, 0.15); }
.outline-btn {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: white;
}
.outline-btn:hover { background: rgba(255, 255, 255, 0.05); border-color: white; }

/* Auth Views */
.auth-body { align-items: center; justify-content: center; }
.auth-container {
    width: 100%;
    max-width: 420px;
    padding: 40px;
    position: relative;
    overflow: hidden;
}
.auth-header {
    text-align: center;
    margin-bottom: 30px;
}
.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 5px;
}
.logo i {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 2rem;
}
.auth-header p { color: var(--text-muted); font-size: 0.95rem; }

.input-group {
    position: relative;
    margin-bottom: 20px;
}
.input-group i {
    position: absolute;
    left: 16px; top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}
.input-group input {
    width: 100%;
    padding: 14px 16px 14px 45px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: white;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s;
}
.input-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
    outline: none;
}
.auth-switch {
    text-align: center; margin-top: 20px; color: var(--text-muted); font-size: 0.9rem;
}
.auth-switch span {
    color: var(--primary); cursor: pointer; font-weight: 600; transition: color 0.3s;
}
.auth-switch span:hover { color: var(--text-light); }
.error-msg { color: var(--danger); font-size: 0.85rem; margin-bottom: 15px; text-align: center; display: none; }

/* Dashboard Nav */
.navbar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 15px 5%; width: 100%; position: sticky; top: 0; z-index: 100;
}
.user-profile { display: flex; align-items: center; gap: 20px; }
.username strong { color: var(--primary); font-weight: 600; }

/* Dashboard Main */
.dashboard-container {
    max-width: 900px; margin: 40px auto; width: 90%;
    display: grid; grid-template-columns: 1fr; gap: 30px;
}
.panel-header { margin-bottom: 25px; text-align: center; }
.panel-header h3 { font-size: 1.5rem; margin-bottom: 8px; font-weight: 600; }
.panel-header p { color: var(--text-muted); font-size: 0.95rem; }

/* Upload Area */
.analyzer-panel { padding: 40px; }
.upload-area {
    border: 2px dashed var(--glass-border);
    border-radius: 16px;
    padding: 50px 20px;
    text-align: center;
    transition: all 0.3s;
    background: rgba(0, 0, 0, 0.1);
    cursor: pointer;
}
.upload-area:hover, .upload-area.dragover {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.05);
}
.upload-icon {
    font-size: 3rem; color: var(--primary); margin-bottom: 15px;
}
.file-hint { color: var(--text-muted); font-size: 0.8rem; margin-top: 15px; }

/* Preview */
.upload-preview { text-align: center; animation: fadeIn 0.4s ease; }
.upload-preview img {
    max-width: 100%; max-height: 350px;
    border-radius: 12px; margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
    border: 1px solid var(--glass-border);
}
.preview-actions { display: flex; gap: 15px; justify-content: center; }

/* Loader */
.loader-container { text-align: center; padding: 40px 0; }
.spinner {
    width: 50px; height: 50px;
    border: 4px solid rgba(255,255,255,0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}
.scanning-bar {
    height: 4px; width: 80%; background: linear-gradient(90deg, transparent, var(--primary), transparent);
    margin: 0 auto 15px; border-radius: 2px;
    animation: scan 2s ease-in-out infinite;
}

/* Results */
.hidden { display: none !important; }
.result-panel { padding: 40px; text-align: center; animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1); }
.result-title { font-size: 1.2rem; color: var(--text-muted); margin-bottom: 20px; text-transform: uppercase; letter-spacing: 2px; }

.verdict-container { margin-bottom: 30px; }
.verdict-badge {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 12px 30px; border-radius: 50px;
    font-size: 1.5rem; font-weight: 600; letter-spacing: 1px;
}
.verdict-real { background: rgba(16, 185, 129, 0.15); color: var(--success); border: 1px solid var(--success); }
.verdict-fake { background: rgba(239, 68, 68, 0.15); color: var(--danger); border: 1px solid var(--danger); }

.metrics {
    background: rgba(0, 0, 0, 0.2); border-radius: 16px; padding: 25px; margin-bottom: 30px;
    border: 1px solid var(--glass-border);
}
.metric { display: flex; justify-content: space-between; margin-bottom: 12px; font-size: 1.1rem; }
.progress-container { width: 100%; height: 8px; background: rgba(255,255,255,0.1); border-radius: 4px; overflow: hidden; }
.progress-bar { height: 100%; width: 0%; border-radius: 4px; transition: width 1.5s cubic-bezier(0.16, 1, 0.3, 1); }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes scan { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
    .auth-container {
        padding: 30px 20px;
        width: 90%;
    }
    .dashboard-container {
        margin: 20px auto;
        width: 95%;
        gap: 20px;
    }
    .analyzer-panel, .result-panel {
        padding: 25px 15px;
    }
    .upload-area {
        padding: 30px 10px;
    }
    .navbar {
        flex-direction: column;
        gap: 15px;
        padding: 15px 5%;
        text-align: center;
    }
    .user-profile {
        justify-content: center;
        flex-wrap: wrap;
    }
    .verdict-badge {
        font-size: 1rem;
        padding: 15px 20px;
        letter-spacing: 0px;
        width: 100%;
        justify-content: center;
    }
    .preview-actions {
        flex-direction: column;
    }
    .btn { width: 100%; }
    .blob-1 { width: 250px; height: 250px; }
    .blob-2 { width: 200px; height: 200px; }
}