/* Mobile Optimized CSS */

* {
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 터치 최적화 */
button, a, input, select {
    touch-action: manipulation;
}

/* 버튼 스타일 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: #2563eb;
    color: white;
}

.btn-primary:active {
    background-color: #1d4ed8;
}

.btn-secondary {
    background-color: #6b7280;
    color: white;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 18px;
}

/* 컨테이너 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* 헤더 */
.header {
    background-color: #2563eb;
    color: white;
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

.header-title {
    font-size: 20px;
    font-weight: 700;
    margin: 0;
}

/* 메인 컨텐츠 */
.main-content {
    min-height: calc(100vh - 80px);
    padding: 20px 0;
}

/* 반응형 */
@media (max-width: 768px) {
    .container {
        padding: 0 12px;
    }
}

/* iOS Safe Area */
@supports (padding: max(0px)) {
    body {
        padding-left: max(0px, env(safe-area-inset-left));
        padding-right: max(0px, env(safe-area-inset-right));
    }
}