@font-face { font-family: 'Taigi Font'; src: url('../font/Charis-Regular.woff2') format('woff2'); font-weight: 400; font-style: normal; }
@font-face { font-family: 'Taigi Font'; src: url('../font/Charis-Bold.woff2') format('woff2'); font-weight: 700; font-style: normal; }

:root {
    --bg-paper: #FFFDF5; 
    --primary-lime: #A8C834; 
    --text-header: #556B2F; 
    --accent-purple: #7E7CB0; 
    --accent-gold: #BFA66F; 
    --text-body: #545454;
    --card-shadow: rgba(168, 200, 52, 0.15);
}

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

body {
    margin: 0; 
    font-family: 'Taigi Font', serif;
    background-color: var(--bg-paper); 
    color: var(--text-body);
    display: flex; flex-direction: column; min-height: 100vh;
    background-image: radial-gradient(#A8C83411 1px, transparent 1px);
    background-size: 20px 20px;
    overflow-x: hidden;
}

/* HEADER */
header {
    background: transparent;
    padding: 60px 20px 20px;
    /* iPhone Notch Support */
    padding-top: max(60px, env(safe-area-inset-top));
    padding-left: max(20px, env(safe-area-inset-left));
    padding-right: max(20px, env(safe-area-inset-right));
    text-align: center; position: relative; transition: 0.3s;
}

header h1 { 
    margin: 0; 
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    background: linear-gradient(45deg, var(--text-header), var(--primary-lime));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    letter-spacing: 0.05em;
}

header p { 
    margin: 10px 0 0; color: var(--accent-purple); font-size: 1.2rem; font-style: italic;
    border-bottom: 2px solid var(--primary-lime); display: inline-block; padding-bottom: 5px;
}

/* SEARCH BAR (Responsive Wrapping) */
.search-container { text-align: center; margin-top: 20px; width: 100%; }
.search-input {
    padding: 12px 20px;
    width: 90%; max-width: 400px; /* Prevents overflow on mobile */
    border: 2px solid var(--accent-purple); border-radius: 25px;
    font-family: 'Taigi Font', serif; background: rgba(255,255,255,0.8);
    outline: none; color: var(--text-header);
    font-size: 16px; /* Prevents iOS Zoom */
    transition: 0.3s;
}
.search-input:focus { border-color: var(--primary-lime); box-shadow: 0 0 15px var(--card-shadow); }

/* NAVIGATION (Responsive Wrapping) */
#nav-bar {
    display: flex; justify-content: center; gap: 10px; padding: 20px 10px;
    flex-wrap: wrap; /* WRAPS BUTTONS ON PORTRAIT */
    position: sticky; top: 0; z-index: 100;
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}

.filter-btn {
    padding: 10px 20px; border: 2px solid var(--accent-purple);
    background: rgba(255,255,255,0.9); border-radius: 24px;
    cursor: pointer; transition: all 0.2s ease;
    font-size: 0.95rem; color: var(--accent-purple); font-weight: 600;
    white-space: nowrap; min-height: 44px; display: flex; align-items: center;
    font-family: 'Taigi Font', serif;
}
.filter-btn:hover { transform: translateY(-2px); border-color: var(--primary-lime); color: var(--text-header); }
.filter-btn.active { background: var(--primary-lime); color: white; border-color: var(--primary-lime); box-shadow: 0 4px 15px var(--card-shadow); }
.req-btn { background: var(--text-header); color: white; border-color: var(--text-header); text-decoration: none; }

/* MAIN GALLERY (Grid Auto-Adjust) */
#gallery {
    max-width: 1400px; margin: 0 auto; padding: 20px; width: 100%;
    display: grid; 
    /* SMART GRID: 1 col (Phone), 2-3 cols (Tablet), 4 cols (PC) */
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px; flex-grow: 1;
}

.card {
    background: white; border-radius: 12px 12px 12px 0; overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05); transition: transform 0.3s, box-shadow 0.3s;
    display: flex; flex-direction: column; border-top: 5px solid var(--primary-lime);
}
@media (hover: hover) { .card:hover { transform: translateY(-8px); box-shadow: 0 20px 40px var(--card-shadow); } }

.thumbnail-link { display: block; position: relative; overflow: hidden; aspect-ratio: 16/9; }
.thumbnail { width: 100%; height: 100%; object-fit: cover; filter: sepia(20%); transition: 0.5s; }
.play-icon {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 50px; height: 50px; background: rgba(255,255,255,0.9); border-radius: 50%;
    color: var(--primary-lime); display: flex; align-items: center; justify-content: center;
    font-size: 20px; opacity: 0.9;
}

.card-body { padding: 20px; flex-grow: 1; display: flex; flex-direction: column; }
.card-tag { font-size: 0.85rem; color: var(--accent-gold); font-weight: bold; font-style: italic; margin-bottom: 5px; }
.card-title { margin: 0 0 10px; font-size: 1.3rem; font-weight: 700; color: var(--text-header); line-height: 1.3;}
.card-desc { font-size: 0.95rem; color: var(--text-body); margin-bottom: 20px; flex-grow: 1; line-height: 1.6; }

.action-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: auto; }
.action-btn {
    text-align: center; padding: 10px 0; border-radius: 6px; font-size: 0.85rem; font-weight: 600; text-decoration: none; border: 1px solid transparent; font-family: 'Taigi Font', serif;
}
.btn-watch { grid-column: span 2; background-color: var(--primary-lime); color: white; }
.btn-shadow { border-color: var(--accent-purple); color: var(--accent-purple); }
.btn-vocab { border-color: var(--accent-gold); color: var(--accent-gold); }
.btn-quiz { color: #999; border: 1px dashed #ccc; grid-column: span 2; margin-top: 5px; }

footer {
    background: linear-gradient(to top, #E8F5E9, var(--bg-paper)); color: var(--text-header); 
    text-align: center; padding: 50px; margin-top: 50px; border-top: 1px solid rgba(168, 200, 52, 0.3);
    padding-bottom: max(50px, env(safe-area-inset-bottom));
}

/* LANDSCAPE HEADER SHRINK */
@media (max-height: 500px) and (orientation: landscape) {
    header { padding-top: 20px; padding-bottom: 10px; }
    header h1 { font-size: 1.8rem; }
    #gallery { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); } /* Smaller cards for landscape phone */
}