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

/* KG그룹 공식 컬러 시스템 정의 */
:root {
    --kg-royal-purple: #4A2582;
    --kg-royal-purple-dark: #321959;
    --kg-yellow: #FFC72C;
    --kg-yellow-dark: #f0b820;
    --background-color: #f7f8fc;
    --card-background-color: #ffffff;
    --text-color: #212529;
    --subtle-text-color: #6c757d;
    --border-color: #e5e9f2;
    --shadow: 0 16px 32px rgba(74, 37, 130, 0.1);
}

* { box-sizing: border-box; }

body {
    font-family: 'Pretendard', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 700px;
    height: 85vh;
    max-height: 850px;
    background-color: var(--card-background-color);
    border-radius: 24px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

/* ▼▼▼▼▼▼▼▼▼▼ 여기가 수정된 부분입니다 ▼▼▼▼▼▼▼▼▼▼ */
.main-header {
    text-align: center;
    padding: 20px 30px; /* 상하 padding을 24px에서 20px로 줄였습니다. */
    background: linear-gradient(135deg, var(--kg-royal-purple), var(--kg-royal-purple-dark));
    color: white;
    flex-shrink: 0;
}

.main-header h1 {
    font-size: 1.6rem; /* 1.7rem에서 1.6rem으로 미세 조정 */
    font-weight: 700;
    margin-bottom: 4px;
}
/* ▲▲▲▲▲▲▲▲▲▲ 수정 끝 ▲▲▲▲▲▲▲▲▲▲ */

.main-header p {
    font-size: 0.95rem; opacity: 0.9;
}

.content-area {
    flex-grow: 1;
    overflow-y: auto;
    padding: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.initial-state, .spinner-wrapper {
    text-align: center; color: var(--subtle-text-color);
}
.initial-icon {
    stroke: #d9d3e6; margin-bottom: 16px;
}
.initial-state p {
    font-size: 1.1rem; line-height: 1.7;
}

.spinner-wrapper p {
    margin-top: 16px; font-size: 1rem; font-weight: 500; color: var(--kg-royal-purple);
}

.spinner {
    width: 48px; height: 48px;
    border: 5px solid rgba(74, 37, 130, 0.2);
    border-top-color: var(--kg-royal-purple);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

#result-container {
    width: 100%; height: 100%;
}
#result-text {
    white-space: pre-wrap; word-wrap: break-word; font-size: 0.95rem; line-height: 1.8;
}

.input-area {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    background-color: #fafbff;
    flex-shrink: 0;
}

#review-form {
    display: flex; flex-direction: column; gap: 12px;
}

#prompt-input {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 1rem;
    background-color: #fff;
    resize: vertical;
}
#prompt-input:focus {
    outline: none; border-color: var(--kg-royal-purple); box-shadow: 0 0 0 3px rgba(74, 37, 130, 0.15);
}

.action-bar {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
}

.file-input-wrapper {
    display: flex; align-items: center; gap: 8px;
}

.file-button-label {
    background-color: #f1f3f5;
    color: var(--subtle-text-color);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.2s;
}
.file-button-label:hover {
    background-color: #e9ecef;
}

#file-name-display {
    font-size: 0.9rem; color: var(--subtle-text-color);
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

input[type="file"] { display: none; }

.submit-button {
    background-color: var(--kg-royal-purple);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 24px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s;
}
.submit-button:hover:not(:disabled) {
    background-color: var(--kg-royal-purple-dark);
}
.submit-button:disabled {
    background-color: #adb5bd; cursor: not-allowed;
}

.hidden { display: none !important; }

/* 파일 선택 시, KG Yellow로 색상 변경 */
.file-button-label.has-file {
    background-color: var(--kg-yellow);
    color: #493d0f;
}
.file-button-label.has-file:hover {
    background-color: var(--kg-yellow-dark);
}

.brand-footer {
    margin-top: 20px;
    font-size: 0.85rem;
    color: var(--subtle-text-color);
    text-align: center;
    font-weight: 500;
}
/* --- 하단 네비게이션 버튼 스타일 (추가된 부분) --- */
.navigation-footer {
    width: 100%;
    max-width: 700px;
    margin-top: 16px; /* .container와의 간격 */
    padding: 12px;
    background-color: var(--card-background-color);
    border-radius: 16px;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    text-align: center;
}

.nav-button {
    background-color: var(--kg-royal-purple);
    color: white;
    padding: 12px 24px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.05rem;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: background-color 0.2s;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-button:hover {
    background-color: var(--kg-royal-purple-dark);
}
/* ------------------------------------------- */