@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
    --bg-color: #f8fafc;
    --surface-color: #ffffff;
    --secondary-color: #eef1f5;
    --text-color: #0f172a;
    --text-light-color: #475569;
    --accent-color: #0ea5e9;
    --accent-hover-color: #0284c7;
    --border-color: #e5e7eb;
    --shadow-color: rgba(15, 23, 42, 0.08);
    --error-color: #ef4444;
    --font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

input[type="checkbox"] {
    accent-color: var(--accent-color);
}

html, body {
    background-color: var(--bg-color);
}

body {
    font-family: var(--font-family);
    background: radial-gradient(circle at 20% 20%, #e0f7ff 0, transparent 26%),
                radial-gradient(circle at 80% 0%, #fce7f3 0, transparent 25%),
                linear-gradient(180deg, #f8fafc 0%, #f4f6fb 100%);
    background-attachment: fixed;
    color: var(--text-color);
    margin: 0;
    padding: 2.5rem 1.5rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 760px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    flex: 1;
}

.header {
    text-align: center;
}

.header h1 {
    font-size: 2.6rem;
    margin-bottom: 0.35rem;
    color: var(--text-color);
    letter-spacing: -0.02em;
}

.header h1 a {
    color: inherit;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
}

.header p {
    font-size: 1.05rem;
    color: var(--text-light-color);
}

.card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem 2rem;
    box-shadow: 0 10px 30px var(--shadow-color);
}

.form-group {
    display: flex;
    gap: 1rem;
}

#repo-url-input {
    flex-grow: 1;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    background-color: var(--secondary-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

#repo-url-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.25);
}

.btn {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    background-color: var(--accent-color);
    color: var(--bg-color);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn:hover:not(:disabled) {
    background-color: var(--accent-hover-color);
    transform: translateY(-1px);
}

.btn:disabled {
    background-color: #d5d8dd;
    cursor: not-allowed;
}

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

.btn.ghost-btn:hover:not(:disabled) {
    background-color: var(--secondary-color);
    color: var(--text-color);
}

#analysis-result {
    display: none;
    flex-direction: column;
    gap: 1.5rem;
}

.result-box {
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 8px;
    overflow-y: auto;
}

h2,
h3 {
    margin-top: 0;
    /* Keep section headings legible on the light theme */
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

#exts-container {
    min-height: 100px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 0.75rem;
}

#exts-container>div {
    display: flex;
    align-items: center;
}

#exts-container label {
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

#exts-container input[type="checkbox"],
#tree-container input[type="checkbox"] {
    cursor: pointer;
    accent-color: var(--accent-color);
}

#tree-container {
    height: 420px;
}

.tree-root {
    font-family: var(--font-family);
    color: var(--text-color);
    font-size: 0.92rem;
}

.tree-root-header {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    padding: 1px 0;
    color: var(--text-color);
    font-family: var(--font-family);
}

.tree-root-header .dir-item::before {
    opacity: 1;
}

.tree-directory,
.tree-leaf {
    margin: 0;
    font-size: 0.92rem;
}

.tree-summary {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    cursor: pointer;
    padding: 0;
    position: relative;
    color: var(--text-color);
    font-size: 0.92rem;
}

.tree-summary::-webkit-details-marker {
    display: none;
}

.tree-summary::before {
    content: '▸';
    display: inline-block;
    color: var(--text-light-color);
    transition: transform 0.15s ease;
}

.tree-directory[open]>.tree-summary::before {
    transform: rotate(90deg);
}

.tree-children {
    border-left: 1px solid var(--border-color);
    margin-left: 1rem;
    padding-left: 0.6rem;
}

.tree-leaf {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    position: relative;
    padding: 1px 0;
    color: var(--text-color);
}

.tree-leaf::before {
    content: '└';
    position: absolute;
    left: -0.85rem;
    color: var(--text-light-color);
}

.file-item,
.dir-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.file-item::before,
.dir-item::before {
    display: inline-block;
    width: 1em;
    height: 1em;
    content: '';
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.8;
}

.dir-item::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%239CA3AF' viewBox='0 0 24 24'%3E%3Cpath d='M20 6h-8l-2-2H4c-1.1 0-2 .9-2 2v12c0 1.1.9 2 2 2h16c1.1 0 2-.9 2-2V8z'/%3E%3C/svg%3E");
}

.file-item::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%239CA3AF' viewBox='0 0 24 24'%3E%3Cpath d='M14 2H6c-1.1 0-2 .9-2 2v16c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V8zM6 20V4h7v5h5v11z'/%3E%3C/svg%3E");
}

.export-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

.loader {
    width: 18px;
    height: 18px;
    border: 2px solid #FFF;
    border-bottom-color: transparent;
    border-radius: 50%;
    display: inline-block;
    animation: rotation 1s linear infinite;
}

@keyframes rotation {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

#error-toast {
    position: fixed;
    top: 22px;
    right: 22px;
    width: min(480px, calc(100% - 32px));
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-left: 5px solid var(--error-color);
    box-shadow: 0 15px 40px var(--shadow-color);
    padding: 1rem 1.25rem;
    border-radius: 14px;
    display: flex;
    gap: 0.9rem;
    align-items: flex-start;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 1100;
}

#error-toast.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.error-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(239, 68, 68, 0.12);
    color: var(--error-color);
    display: grid;
    place-items: center;
    font-weight: 700;
    letter-spacing: 0.01em;
}

.error-copy {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    color: var(--text-color);
}

.error-title {
    margin: 0;
    font-weight: 700;
    color: var(--text-color);
}

#error-message {
    margin: 0;
    color: var(--text-color);
    line-height: 1.4;
}

#error-close {
    align-self: center;
}

@media (max-width: 640px) {
    #error-toast {
        left: 16px;
        right: 16px;
        width: auto;
        top: 12px;
    }
}

#modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

#modal-content {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: 12px;
    width: 80%;
    max-width: 900px;
    height: 80vh;
    display: flex;
    flex-direction: column;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.modal-header h3 {
    border: none;
    margin: 0;
    padding: 0;
}

#modal-close {
    background: var(--secondary-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

#copy-button,
#copy-all-button,
#prev-page,
#next-page {
    background-color: var(--accent-color);
    color: var(--bg-color);
}

#copy-button:hover:not(:disabled),
#copy-all-button:hover:not(:disabled),
#prev-page:hover:not(:disabled),
#next-page:hover:not(:disabled) {
    background-color: var(--accent-hover-color);
}

#markdown-preview {
    flex-grow: 1;
    overflow-y: auto;
    background: var(--bg-color);
    padding: 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: 'SF Mono', 'Consolas', monospace;
    white-space: pre-wrap;
}

footer {
    margin-top: auto;
    text-align: center;
    color: var(--text-light-color);
}

footer a {
    color: var(--accent-color);
}

.logo-mark {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    box-shadow: 0 10px 22px rgba(2, 132, 199, 0.25);
    background: var(--secondary-color);
}

.intro {
    text-align: center;
    margin-top: 1rem;
    color: var(--text-light-color);
    font-size: 1.05rem;
    line-height: 1.6;
}

.intro p {
    margin: 0.3rem 0;
}

.file-input-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

/* 모든 브라우저의 기본 파일 버튼 완전 제거 */
.file-input-hidden::-webkit-file-upload-button {
    display: none !important;
    visibility: hidden !important;
    width: 0 !important;
    height: 0 !important;
}

.file-input-hidden::file-selector-button {
    display: none !important;
    visibility: hidden !important;
    width: 0 !important;
    height: 0 !important;
}

.file-input-hidden::-ms-browse {
    display: none !important;
}

/* Firefox 대응 */
.file-input-hidden::-moz-file-upload-button {
    display: none !important;
}
/* 파일명 표시 인풋 스타일 */
#file-name-display {
    flex-grow: 1;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    background-color: var(--secondary-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    outline: none;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
}

#file-name-display:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.25);
}

/* 완전한 파일 인풋 숨김 */
.file-input-hidden {
    display: none !important;
}