/* GmarketSans 폰트 불러오기 (로컬 파일 기준) */
@font-face {
    font-family: 'GmarketSans';
    font-weight: 300; /* Light */
    src: url('font/GmarketSansLight.otf') format('opentype');
}
@font-face {
    font-family: 'GmarketSans';
    font-weight: 500; /* Medium */
    src: url('font/GmarketSansMedium.otf') format('opentype');
}
@font-face {
    font-family: 'GmarketSans';
    font-weight: 700; /* Bold */
    src: url('font/GmarketSansBold.otf') format('opentype');
}

/* --- 뉴모피즘 스타일 변수 --- */
:root {
    /* 라이트 테마 변수 */
    --light-bg: #e5e7f3;
    --light-text: #333;
    --light-text-secondary: #666;
    --light-neumo-shadow-dark: #b3b7c8;
    --light-neumo-shadow-light: #ffffff;
    --light-primary: #007bff;

    /* 다크 테마 변수 */
    --dark-bg: #0A2463;
    --dark-text: #FFFFFF;
    --dark-text-secondary: #cccccc;
    --dark-neumo-shadow-darker: #06173E;
    --dark-neumo-shadow-lighter: #0E3188;
    --dark-neumo-inset-darker: #051435;
    --dark-neumo-inset-lighter: #113DAE;
    --dark-accent: #87CEFA; /* 밝은 하늘색 */
    
    --transition-speed: 0.3s ease;
}

body {
    font-family: 'GmarketSans', sans-serif;
    font-weight: 500; /* 기본 폰트 굵기를 Medium으로 설정 */
    display: flex;
    justify-content: center;
        padding-top: 10vh; 
    align-items: center;
    min-height: 100vh;
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

body.dark-theme {
    background-color: var(--dark-bg);
    color: var(--dark-text);
}

body.light-theme {
    background-color: var(--light-bg);
    color: var(--light-text);
}

.speedtest-container {
    width: 100%;
    max-width: 700px;
    padding: 20px;
    text-align: center;
}

h1 {
    font-weight: 700; /* Bold */
    font-size: 2.2rem;
    margin-bottom: 20px;
}

#gif-container {
    margin-bottom: 30px;
    height: 120px; /* 공간 확보 */
    display: flex;
    justify-content: center;
    align-items: center;
}

#status-gif {
    max-height: 100px;
    display: none; /* 기본적으로 숨김 */
}

#status-text {
    font-size: 1.1rem;
    margin-bottom: 25px;
    min-height: 1.5em;
}
.light-theme #status-text { color: var(--light-text-secondary); }
.dark-theme #status-text { color: var(--dark-text-secondary); }


#start-button {
    color: var(--light-primary);
    background-color: var(--light-bg);
    border: none;
    border-radius: 50px;
    padding: 15px 30px;
    font-size: 1.2rem;
    font-weight: 700; /* 굵게 하여 강조 */
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 40px;
    transition: transform 0.2s, box-shadow var(--transition-speed);
    box-shadow: -7px -7px 8px var(--light-neumo-shadow-light), 7px 7px 8px var(--light-neumo-shadow-dark);
}
.dark-theme #start-button {
    background-color: var(--dark-bg);
    color: var(--dark-accent);
    box-shadow: 7px 7px 15px var(--dark-neumo-shadow-darker), -7px -7px 15px var(--dark-neumo-shadow-lighter);
}

#start-button:hover {
    transform: translateY(-3px);
}
.light-theme #start-button:hover {
    box-shadow: -10px -10px 20px var(--light-neumo-shadow-light), 10px 10px 20px var(--light-neumo-shadow-dark);
}
.dark-theme #start-button:hover {
     box-shadow: 10px 10px 20px var(--dark-neumo-shadow-darker), -10px -10px 20px var(--dark-neumo-shadow-lighter);
}
#start-button:active {
    transform: translateY(1px);
    box-shadow: inset -4px -4px 8px var(--light-neumo-shadow-light), inset 4px 4px 8px var(--light-neumo-shadow-dark);
}
.dark-theme #start-button:active {
    box-shadow: inset 5px 5px 10px var(--dark-neumo-inset-darker), inset -5px -5px 10px var(--dark-neumo-inset-lighter);
}

#start-button:disabled {
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    background-color: #ccc;
    color: #888;
}
.dark-theme #start-button:disabled {
    background-color: #555;
    color: #aaa;
}


/* 새로운 다운로드/업로드 컨테이너 */
.main-speed-container {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 40px;
}

.speed-box {
    flex: 1;
    padding: 25px 20px;
    border-radius: 20px;
    transition: background-color 0.3s, box-shadow var(--transition-speed), transform 0.2s;
}

.dark-theme .speed-box {
    background-color: var(--dark-bg);
    box-shadow: 7px 7px 15px var(--dark-neumo-shadow-darker), -7px -7px 15px var(--dark-neumo-shadow-lighter);
}

.light-theme .speed-box {
    background-color: var(--light-bg);
    box-shadow: -7px -7px 8px var(--light-neumo-shadow-light), 7px 7px 8px var(--light-neumo-shadow-dark);
}

.speed-label {
    margin: 0 0 10px 0;
    font-size: 1rem;
    font-weight: 300; /* Light */
}
.light-theme .speed-label { color: var(--light-text-secondary); }
.dark-theme .speed-label { color: var(--dark-text-secondary); }

.speed-value {
    font-size: 3rem;
    font-weight: 700; /* Bold */
    line-height: 1.2;
}

.speed-unit {
    font-size: 1.2rem;
    margin-left: 8px;
}


/* 하단 상세정보 그리드 */
.results-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    width: 100%;
}

.result-item {
    padding: 20px;
    border-radius: 15px;
    transition: background-color 0.3s, box-shadow var(--transition-speed);
}

.dark-theme .result-item {
    background-color: var(--dark-bg);
    box-shadow: 7px 7px 15px var(--dark-neumo-shadow-darker), -7px -7px 15px var(--dark-neumo-shadow-lighter);
}

.light-theme .result-item {
    background-color: var(--light-bg);
    box-shadow: -7px -7px 8px var(--light-neumo-shadow-light), 7px 7px 8px var(--light-neumo-shadow-dark);
}

.result-item p {
    margin: 0 0 10px 0;
    font-size: 0.9rem;
    font-weight: 300; /* Light */
}
.light-theme .result-item p { color: var(--light-text-secondary); }
.dark-theme .result-item p { color: var(--dark-text-secondary); }


.result-item span {
    font-size: 1.5rem;
    font-weight: 500; /* Medium */
    word-break: break-all;
}

/* 인터넷 유형 메시지 스타일 추가 */
.symmetry-result {
    margin-top: 15px;
    font-size: 1.1rem;
    font-weight: 500;
    min-height: 1.2em;
}
.light-theme .symmetry-result { color: var(--light-primary); }
.dark-theme .symmetry-result { color: var(--dark-accent); }


/* 프로모션 박스 스타일 */
.promo-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.promo-box {
    padding: 25px 20px;
    border-radius: 15px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.2s, box-shadow var(--transition-speed), background-color 0.3s;
}

.promo-box:hover {
    transform: translateY(-3px);
}

.dark-theme .promo-box {
    background-color: var(--dark-bg);
    color: var(--dark-text);
    box-shadow: 7px 7px 15px var(--dark-neumo-shadow-darker), -7px -7px 15px var(--dark-neumo-shadow-lighter);
}
.dark-theme .promo-box:hover {
    box-shadow: 10px 10px 20px var(--dark-neumo-shadow-darker), -10px -10px 20px var(--dark-neumo-shadow-lighter);
}

.light-theme .promo-box {
    background-color: var(--light-bg);
    color: var(--light-text);
    box-shadow: -7px -7px 8px var(--light-neumo-shadow-light), 7px 7px 8px var(--light-neumo-shadow-dark);
}
.light-theme .promo-box:hover {
    box-shadow: -10px -10px 20px var(--light-neumo-shadow-light), 10px 10px 20px var(--light-neumo-shadow-dark);
}


#theme-toggle {
    margin-top: 40px;
    padding: 10px 20px;
    border-radius: 20px;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s, box-shadow var(--transition-speed), transform 0.2s;
    font-weight: 500; /* Medium */
}

.dark-theme #theme-toggle {
    background-color: var(--dark-bg);
    color: var(--dark-text);
    box-shadow: 7px 7px 15px var(--dark-neumo-shadow-darker), -7px -7px 15px var(--dark-neumo-shadow-lighter);
}
.light-theme #theme-toggle {
    background-color: var(--light-bg);
    color: var(--light-text);
    box-shadow: -7px -7px 8px var(--light-neumo-shadow-light), 7px 7px 8px var(--light-neumo-shadow-dark);
}
#theme-toggle:hover {
    transform: translateY(-2px);
}
#theme-toggle:active {
    transform: translateY(1px);
}

/* 모바일 반응형 */
@media (max-width: 600px) {
    .main-speed-container, .results-details {
        flex-direction: column;
        grid-template-columns: 1fr;
    }
    
    .promo-container {
        display: none;
    }
}