:root {
    --bg-color: #0f172a;
    --panel-bg: rgba(30, 41, 59, 0.7);
    --panel-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --danger-color: #ef4444;
    --input-bg: rgba(15, 23, 42, 0.6);
    --input-border: rgba(255, 255, 255, 0.15);
    --card-bg: rgba(51, 65, 85, 0.5);
    --card-hover: rgba(51, 65, 85, 0.8);
}

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

body {
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 0% 0%, hsla(253,16%,7%,1) 0, transparent 50%), 
        radial-gradient(at 50% 0%, hsla(225,39%,30%,1) 0, transparent 50%), 
        radial-gradient(at 100% 0%, hsla(339,49%,30%,1) 0, transparent 50%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    background-attachment: fixed;
}

.app-container {
    width: 100%;
    max-width: 800px;
    position: relative;
}

/* Glassmorphism Panel */
.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--panel-border);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.glass-panel.hidden {
    display: none;
    opacity: 0;
    transform: translateY(20px);
}

.glass-panel.active {
    display: block;
    animation: slideUp 0.5s ease forwards;
}

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

/* Typography */
h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
    text-align: center;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

h3 {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

/* Logo */
.logo {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

/* Forms & Inputs */
.input-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
}

.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

input, select {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-primary);
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    width: 100%;
}

input:focus, select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

select option {
    background: var(--bg-color);
    color: var(--text-primary);
}

/* Buttons */
.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: background-color 0.2s, transform 0.1s;
}

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

.btn-primary:active {
    transform: scale(0.98);
}

.btn-text {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    padding: 8px;
    transition: color 0.2s;
}

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

.btn-download {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

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

/* Dashboard specific */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--panel-border);
}

.search-form {
    margin-bottom: 40px;
}

/* Results */
.files-list {
    display: grid;
    gap: 16px;
}

.file-card {
    background: var(--card-bg);
    border: 1px solid var(--panel-border);
    padding: 20px;
    border-radius: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.2s, transform 0.2s;
}

.file-card:hover {
    background: var(--card-hover);
    transform: translateY(-2px);
}

.file-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.file-name {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.file-meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    gap: 12px;
}

.badge {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
    background: rgba(0,0,0,0.2);
    border-radius: 12px;
    border: 1px dashed var(--panel-border);
}

.error-msg {
    color: var(--danger-color);
    margin-top: 12px;
    text-align: center;
    font-size: 0.875rem;
}

/* Loader */
.loader {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
    margin: 40px auto;
}

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

/* Toast */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--primary-color);
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Responsive */
@media (max-width: 600px) {
    .input-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .file-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .btn-download {
        width: 100%;
        text-align: center;
    }
}