:root {
    --primary-color: #4A90E2;
    --primary-dark: #357ABD;
    --bg-color: #0F172A;
    --text-color: #F8FAFC;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --success: #10B981;
    --error: #EF4444;
}

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

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

/* Background animated shapes */
.background-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 10s infinite alternate ease-in-out;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: #3B82F6;
    top: -100px;
    left: -100px;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: #8B5CF6;
    bottom: -50px;
    right: -50px;
    animation-delay: -5s;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: #10B981;
    top: 40%;
    left: 60%;
    animation-delay: -2s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 50px) scale(1.1); }
}

/* Glassmorphism Container */
.glass-container {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px;
    width: 100%;
    max-width: 600px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    z-index: 1;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

h1 span {
    background: linear-gradient(135deg, #60A5FA, #A78BFA);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 300;
}

/* Form Styles */
.file-inputs {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

label {
    font-size: 0.9rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
}

input[type="file"] {
    width: 100%;
    padding: 12px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px dashed rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: var(--text-color);
    font-size: 0.9rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

input[type="file"]:hover, input[type="file"]:focus {
    border-color: var(--primary-color);
    background: rgba(0, 0, 0, 0.3);
    outline: none;
}

input[type="file"]::file-selector-button {
    background: var(--primary-color);
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    color: white;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    cursor: pointer;
    margin-right: 15px;
    transition: background 0.3s ease;
}

input[type="file"]::file-selector-button:hover {
    background: var(--primary-dark);
}

/* Button */
button {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #3B82F6, #8B5CF6);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 1.1rem;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -10px rgba(139, 92, 246, 0.8);
}

button:active {
    transform: translateY(0);
}

button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

.hidden {
    display: none !important;
}

/* Status Message */
#statusMessage {
    margin-top: 20px;
    padding: 15px;
    border-radius: 12px;
    text-align: center;
    font-weight: 600;
    font-size: 0.95rem;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.success {
    background: rgba(16, 185, 129, 0.2);
    border: 1px solid var(--success);
    color: #34D399;
}

.error {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid var(--error);
    color: #F87171;
}