:root {
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --text-white: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #10b981;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-white);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-image: radial-gradient(circle at 50% 50%, #1e293b 0%, #0f172a 100%);
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 1.5rem;
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.title {
    font-size: 2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, #60a5fa 0%, #a855f7 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

input[type="email"],
input[type="password"],
input[type="text"] {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    outline: none;
    transition: all 0.2s ease;
}

input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
}

.btn {
    width: 100%;
    padding: 0.75rem;
    border-radius: 0.75rem;
    border: none;
    background: var(--primary);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.error-box {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.5);
    color: #fca5a5;
    padding: 0.75rem;
    border-radius: 0.75rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

/* Dashboard styles */
.dashboard-container {
    width: 90%;
    max-width: 1000px;
    margin: 2rem auto;
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border-radius: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.file-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.file-card {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 1.25rem;
    border-radius: 1rem;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

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

.file-name {
    font-weight: 600;
    font-size: 1.1rem;
    word-break: break-all;
}

.file-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.file-actions {
    margin-top: auto;
    display: flex;
    gap: 0.5rem;
    padding-top: 1rem;
}

.action-btn {
    padding: 0.5rem 0.8rem;
    border-radius: 0.6rem;
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    border: none;
}

.copy-btn {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.copy-btn.success {
    background: var(--accent);
}

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

.thumbnail-preview {
    width: 100%;
    height: 160px;
    border-radius: 0.75rem;
    background: #000;
    overflow: hidden;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.thumbnail-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: cover;
    width: 100%;
    height: 100%;
}

.file-icon {
    font-size: 3rem;
    color: var(--text-muted);
}

.delete-btn {
    background: rgba(239, 68, 68, 0.8);
    color: white;
}

.upload-area {
    margin-bottom: 2rem;
    border: 2px dashed rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.upload-area:hover {
    border-color: var(--primary);
}

#file-input {
    display: none;
}