:root {
    --color-bg-start: #0a0a0a;
    --color-bg-end: #1a1a1a;
    --color-accent: #ffffff;
    --color-accent-hover: #cccccc;
    --color-surface: rgba(255, 255, 255, 0.03);
    --color-surface-border: rgba(255, 255, 255, 0.1);
    --color-text-primary: #f0f0f0;
    --color-text-secondary: #999999;
    --color-input-bg: rgba(0, 0, 0, 0.4);
    --color-input-focus: rgba(255, 255, 255, 0.15);
    
    --radius-lg: 16px;
    --radius-md: 8px;
    
    --transition-fast: 0.2s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    background: linear-gradient(135deg, var(--color-bg-start), var(--color-bg-end));
    color: var(--color-text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    position: relative;
    overflow-x: hidden;
}

/* Subtle background animation */
.background-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
}

.background-animation::before,
.background-animation::after {
    content: '';
    position: absolute;
    width: 800px;
    height: 800px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, rgba(0,0,0,0) 70%);
    animation: drift 20s infinite alternate ease-in-out;
}

.background-animation::after {
    right: -200px;
    bottom: -200px;
    background: radial-gradient(circle, rgba(255,255,255,0.02) 0%, rgba(0,0,0,0) 70%);
    animation-delay: -10s;
}

@keyframes drift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(100px, -50px); }
}

.container {
    width: 100%;
    max-width: 800px;
    z-index: 1;
}

.header {
    text-align: center;
    margin-bottom: 2.5rem;
    animation: fadeDown 0.8s ease backwards;
}

.header h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #fff, #888);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    font-weight: 300;
}

.form-card {
    background: var(--color-surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeUp 0.8s ease 0.2s backwards;
}

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

.form-group.row {
    display: flex;
    gap: 1.5rem;
}

.input-wrapper {
    flex: 1;
}

label {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 400;
    transition: color var(--transition-fast);
}

input, textarea {
    width: 100%;
    background: var(--color-input-bg);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    color: var(--color-text-primary);
    font-size: 1rem;
    outline: none;
    transition: all var(--transition-fast);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

input:focus, textarea:focus {
    border-color: var(--color-input-focus);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.05);
}

input:focus + label, textarea:focus + label {
    color: var(--color-accent);
}

/* Custom File Upload */
.file-upload-group {
    position: relative;
    margin-top: 2rem;
}

.file-input {
    position: absolute;
    width: 0;
    height: 0;
    opacity: 0;
}

.file-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    border: 2px dashed var(--color-surface-border);
    border-radius: var(--radius-md);
    background: rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-label:hover {
    border-color: var(--color-accent-hover);
    background: rgba(255, 255, 255, 0.03);
}

.file-icon {
    margin-bottom: 0.5rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.file-label:hover .file-icon {
    color: var(--color-accent);
}

.file-label span {
    font-size: 1.1rem;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
}

.file-label small {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.file-list {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.file-list p {
    margin-bottom: 0.25rem;
    padding: 0.5rem;
    background: rgba(255,255,255,0.05);
    border-radius: 4px;
    display: inline-block;
    margin-right: 0.5rem;
}

.submit-wrapper {
    margin-top: 2.5rem;
    display: flex;
    justify-content: flex-end;
}

.btn-primary {
    background: var(--color-accent);
    color: #000;
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 30px;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary:hover {
    background: var(--color-text-primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.1);
}

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

/* HTMX Loading State */
.htmx-indicator {
    display: none;
}
.htmx-request .htmx-indicator {
    display: inline-block;
}
.htmx-request .btn-text {
    display: none;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.3);
    border-radius: 50%;
    border-top-color: #000;
    animation: spin 1s ease-in-out infinite;
}

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

/* Animations */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeUp 0.5s ease;
}

.success-message, .error-message {
    text-align: center;
    padding: 2rem 0;
}

.success-message h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
}

.success-message p {
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.error-message h2 {
    color: #ff6b6b;
}

/* Responsive */
@media (max-width: 768px) {
    .form-group.row {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .form-card {
        padding: 2rem;
    }
    
    .header h1 {
        font-size: 2.2rem;
    }
}