/* [사장님 기강 감사] 멈추지 않는 창조적 코딩 v1.1 */
/* "코딩창이 멈추는 것은 팀장이 죽을 때다!" - Agent Omega */
@import url('https://fonts.googleapis.com/css2?family=Spline+Sans:wght@400;700&display=swap');

:root {
    --primary: #25f48c;
    --bg: #0d1117; /* Darker, more solid background */
    --card-bg: rgba(255, 255, 255, 0.05);
    --text: #ffffff;
    --glass-border: rgba(255, 255, 255, 0.15);
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Spline Sans', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background: radial-gradient(at 0% 0%, rgba(37, 244, 140, 0.15) 0px, transparent 50%),
                radial-gradient(at 50% 0%, rgba(88, 166, 255, 0.1) 0px, transparent 50%),
                radial-gradient(at 100% 0%, rgba(255, 0, 80, 0.05) 0px, transparent 50%);
    background-attachment: fixed;
}

#app {
    width: 100%;
    max-width: 480px;
    padding: 2.5rem;
    background: #161b22; /* Solid background for visibility */
    border-radius: 28px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.5);
    text-align: center;
    position: relative;
    overflow: hidden;
    animation: slideInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideInUp {
    from { opacity: 0; transform: translateY(40px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

h1 {
    color: var(--primary);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

p {
    opacity: 0.8;
    margin-bottom: 2rem;
}

.upload-area {
    border: 2px dashed var(--glass-border);
    padding: 5rem 2rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    background: rgba(255, 255, 255, 0.02);
    box-shadow: inset 0 0 20px rgba(0,0,0,0.2);
}

.upload-area:hover {
    border-color: var(--primary);
    background: rgba(37, 244, 140, 0.08);
    transform: perspective(1000px) rotateX(5deg) scale(1.03);
    box-shadow: 0 15px 40px rgba(0,0,0,0.4);
}

.upload-area i {
    font-size: 3rem;
    display: block;
    margin-bottom: 1rem;
}

.caption-results {
    margin-top: 2rem;
    padding: 1.5rem;
    background: rgba(0,0,0,0.2);
    border-radius: 12px;
    border-left: 4px solid var(--primary);
    text-align: left;
    display: none;
}

.hidden { display: none; }

/* [인스타 최적화] 1:1 라이브 프리뷰 스타일 */
.preview-container {
    position: relative;
    width: 100%;
    padding-top: 100%; /* 1:1 Aspect Ratio */
    background: rgba(0,0,0,0.5);
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255,255,255,0.1);
}

#previewImg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#textOverlay {
    position: absolute;
    bottom: 1.5rem;
    left: 1.5rem;
    right: 1.5rem;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 1rem;
    border-radius: 12px;
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    line-height: 1.4;
    border: 1px solid rgba(255,255,255,0.1);
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.5s ease;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

#textOverlay.show {
    transform: translateY(0);
    opacity: 1;
}