@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');

:root {
    --bg-main: #09090b;
    --card-bg: #18181b;
    --border-color: #27272a;
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --accent-color: #ffffff;
    --accent-hover: #e4e4e7;
    --accent-text: #09090b;
    --danger-color: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    min-height: 100vh;
    background-color: var(--bg-main);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Hide AI-like blobs */
.blob {
    display: none !important;
}

.auth-nav {
    position: absolute;
    top: 24px;
    right: 32px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.auth-nav .user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    font-weight: 500;
}

.auth-nav img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
}

.auth-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.auth-nav a:hover {
    color: var(--text-primary);
}

.container {
    width: 100%;
    max-width: 440px;
    padding: 40px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

h1 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.banner.error {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 9999;
    background-color: var(--card-bg);
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
    padding: 16px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
    animation: slideInRight 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

p.subtitle {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 0.95rem;
}

.input-group {
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    text-align: left;
}

.input-group label {
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 500;
}

input[type="text"], input[type="number"] {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1.1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    outline: none;
}

input[type="text"] {
    text-align: center;
    letter-spacing: 4px;
    font-weight: 600;
}

input[type="text"]:focus, input[type="number"]:focus {
    border-color: var(--text-secondary);
}

.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 12px 20px;
    background-color: var(--accent-color);
    color: var(--accent-text);
    border: 1px solid var(--accent-color);
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
    text-decoration: none;
}

.btn:hover:not(:disabled) {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--border-color);
}

.actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.divider {
    margin: 32px 0;
    position: relative;
    height: 1px;
    background: var(--border-color);
}

.divider span {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--card-bg);
    padding: 0 12px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
}

/* Upload Dropzone */
.dropzone {
    border: 1px dashed var(--border-color);
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s ease, background-color 0.2s ease;
    margin-bottom: 24px;
    background-color: var(--bg-main);
}

.dropzone.dragover, .dropzone:hover {
    border-color: var(--text-secondary);
}

.dropzone i {
    font-size: 2rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.dropzone h3 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.dropzone p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

#fileInput {
    display: none;
}

/* Progress */
.progress-container {
    display: none;
    margin-bottom: 24px;
}
.progress-bar {
    height: 6px;
    background-color: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    width: 0%;
    background-color: var(--text-primary);
    transition: width 0.3s ease;
}

/* Result Area */
#resultArea {
    display: none;
    margin-top: 16px;
    padding: 24px;
}

#resultArea h2 {
    color: var(--text-primary);
    font-size: 1.25rem;
    margin-bottom: 8px;
}

#resultArea p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

#resultArea .code-display {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 8px;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding: 16px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

/* Error page */
.error-icon {
    font-size: 3rem;
    color: var(--danger-color);
    margin-bottom: 16px;
}

.settings-group {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.settings-group .input-group {
    flex: 1;
    margin-bottom: 0;
}

.settings-group input {
    letter-spacing: normal;
    text-align: left;
    font-size: 1rem;
    padding: 10px 14px;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.4s cubic-bezier(.36,.07,.19,.97) both;
}

.input-error {
    border-color: var(--danger-color) !important;
    color: var(--danger-color) !important;
}