/* =============================================
   FOGLESTING ONLINE — WebAssembly Nesting App
   Brand: Foglar (#e85b2e, #2e6547, #ffdfb8, #262626)
   ============================================= */

@font-face {
    font-family: 'Boucherie Block';
    src: url('assets/BoucherieBlock.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Boucherie Block';
    src: url('assets/BoucherieBlock-Bold.ttf') format('truetype');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

:root {
    --fire: #e85b2e;
    --fire-light: #f4845f;
    --fire-dark: #c44a1f;
    --forest: #2e6547;
    --forest-light: #3d8760;
    --cream: #ffdfb8;
    --dark: #262626;
    --dark-mid: #1a1a1a;
    --dark-deep: #111111;
    --white: #fafaf9;
    --font-display: 'Boucherie Block', Georgia, serif;
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --glass-bg: rgba(26, 26, 26, 0.75);
    --glass-border: rgba(255, 223, 184, 0.08);
    --radius: 16px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font-body);
    background: var(--dark-deep);
    color: var(--white);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    position: relative;
    overflow-x: hidden;
}

/* ---- DNA Background Canvas ---- */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    opacity: 0.8;
    pointer-events: none;
}

.container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 920px;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* ---- Header ---- */
header {
    display: flex;
    align-items: center;
    gap: 18px;
}
.back-home {
    width: 42px;
    height: 42px;
    border: 1px solid rgba(232,91,46,0.75);
    border-radius: 999px;
    color: var(--fire);
    background: rgba(232,91,46,0.08);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    flex: 0 0 auto;
    transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease;
}
.back-home svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.4;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.back-home:hover {
    background: var(--fire);
    color: var(--dark-deep);
    transform: translateX(-2px);
}
.logo-row { display: flex; align-items: center; gap: 18px; }
.header-logo { height: 56px; filter: drop-shadow(0 2px 8px rgba(232,91,46,0.3)); }

header h1 {
    font-family: var(--font-display);
    font-size: 2.6rem;
    color: var(--cream);
    letter-spacing: 1px;
    line-height: 1.1;
}
.fire-text {
    background: linear-gradient(135deg, var(--fire), var(--fire-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.accent { color: var(--forest-light); }
.subtitle { color: rgba(255,223,184,0.45); font-size: 0.9rem; margin-top: 4px; }

/* ---- Glass Panels ---- */
.glass-panel {
    background: rgba(10, 10, 10, 0.35);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 223, 184, 0.08);
    border-radius: var(--radius);
    padding: 1.75rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5), inset 0 0 0 1px rgba(255,255,255,0.02);
}

/* ---- Upload ---- */
.upload-section {
    display: flex; flex-direction: column; align-items: center; gap: 0.75rem;
    border: 2px dashed rgba(255,223,184,0.15);
    transition: all 0.3s; cursor: pointer;
}
.upload-section:hover { border-color: rgba(232,91,46,0.3); }
.upload-section.dragover { border-color: var(--fire); background: rgba(232,91,46,0.06); }
.upload-section svg { color: rgba(255,223,184,0.35); }
.upload-text { color: rgba(255,223,184,0.55); }
.or { color: rgba(255,223,184,0.25); font-size: 0.85rem; }

.file-list {
    width: 100%; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 10px; margin-top: 15px;
}
.file-list-item {
    background: rgba(17,17,17,0.8); 
    border: 1px solid rgba(255,223,184,0.15);
    padding: 10px 15px; border-radius: 8px;
    display: flex; align-items: center; justify-content: space-between;
    color: var(--cream); font-size: 0.9rem; transition: border-color 0.2s;
}
.file-list-item:hover { border-color: rgba(232,91,46,0.5); }
.file-list-item .file-name {
    flex-grow: 1; margin-right: 15px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500;
}
.file-list-item .file-controls {
    display: flex; align-items: center; gap: 12px;
}
.file-list-item label {
    font-size: 0.8rem; color: rgba(255,223,184,0.6); text-transform: uppercase;
}
.file-list-item input[type="number"] {
    width: 70px; padding: 6px; text-align: center; border-radius: 6px;
    background: rgba(0,0,0,0.5);
}
.file-list-item button {
    background: transparent; color: #e57373; border: none; font-size: 1.2rem; cursor: pointer; padding: 0 5px; transition: transform 0.2s;
}
.file-list-item button:hover { transform: scale(1.2); color: #ff5252; }

/* ---- Input Parts Preview ---- */
.preview-panel h3 {
    font-family: var(--font-display); color: var(--cream); font-size: 1.3rem;
    letter-spacing: 0.5px; margin-bottom: 1rem;
}
.parts-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 12px;
}
.part-card {
    background: rgba(17,17,17,0.6); border: 1px solid rgba(255,223,184,0.06); border-radius: 12px;
    padding: 10px; text-align: center;
}
.part-card canvas { width: 100%; aspect-ratio: 1; display: block; border-radius: 6px; margin-bottom: 6px; }
.part-card .part-name { font-size: 0.72rem; color: rgba(255,223,184,0.5); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.part-card .part-dims { font-size: 0.68rem; color: var(--fire); font-weight: 600; }

/* ---- Buttons ---- */
.btn {
    padding: 0.75rem 1.75rem; border-radius: 10px; border: none;
    font-size: 1rem; font-weight: 600; cursor: pointer;
    transition: all 0.25s; display: inline-flex; align-items: center; justify-content: center;
    gap: 0.5rem; font-family: var(--font-body);
}
.btn-primary { background: var(--fire); color: white; }
.btn-primary:hover { background: var(--fire-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(232,91,46,0.3); }
.btn-success { background: var(--forest); color: white; width: 100%; margin-top: 1rem; padding: 1rem; }
.btn-success:hover { background: var(--forest-light); transform: translateY(-2px); }

.run-btn {
    width: 100%; padding: 1rem; font-size: 1.1rem;
    background: linear-gradient(135deg, var(--fire), var(--fire-dark));
    color: white; border: none; border-radius: var(--radius);
    font-family: var(--font-body); font-weight: 700; letter-spacing: 0.5px;
}
.run-btn:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(232,91,46,0.35); }
.run-btn:disabled { opacity: 0.4; cursor: not-allowed; filter: grayscale(60%); }

.stop-btn {
    width: 100%; padding: 1rem; font-size: 1.1rem;
    background: transparent;
    border: 2px solid var(--fire);
    color: var(--fire); border-radius: var(--radius);
    font-family: var(--font-body); font-weight: 700; letter-spacing: 0.5px;
    transition: all 0.2s;
    cursor: pointer;
}
.stop-btn:hover { 
    background: rgba(232,91,46,0.15); 
    transform: translateY(-2px); 
    box-shadow: 0 12px 28px rgba(232,91,46,0.2); 
}
/* ---- Controls ---- */
.controls { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 1.25rem; }
.control-group { display: flex; flex-direction: column; gap: 0.4rem; }
.control-group label {
    font-size: 0.78rem; color: rgba(255,223,184,0.45);
    text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500;
}
.control-label {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    width: fit-content;
    max-width: 100%;
    position: relative;
}
.info-tip {
    width: 17px;
    height: 17px;
    border-radius: 50%;
    border: 1px solid rgba(255,223,184,0.35);
    color: var(--cream);
    background: rgba(46,101,71,0.35);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.68rem;
    line-height: 1;
    font-weight: 700;
    text-transform: none;
    letter-spacing: 0;
    cursor: help;
    flex: 0 0 auto;
}
.info-tip:hover,
.info-tip:focus-visible {
    border-color: var(--fire);
    background: rgba(232,91,46,0.18);
    color: var(--fire-light);
}
.settings-help {
    grid-column: 1 / -1;
    min-height: 38px;
    display: flex;
    align-items: center;
    padding: 0.65rem 0.85rem;
    border-radius: 10px;
    border: 1px solid rgba(255,223,184,0.08);
    background: rgba(17,17,17,0.55);
    color: rgba(255,223,184,0.52);
    font-size: 0.88rem;
    line-height: 1.35;
}
.settings-help.active {
    border-color: rgba(232,91,46,0.45);
    color: var(--cream);
    background: rgba(232,91,46,0.08);
}
input[type="number"], select {
    background: rgba(17,17,17,0.8); border: 1px solid rgba(255,223,184,0.1);
    color: var(--cream); padding: 0.75rem; border-radius: 10px;
    font-size: 1rem; font-family: var(--font-body); width: 100%; outline: none;
    transition: border-color 0.2s; -webkit-appearance: none;
}
input[type="number"]:focus, select:focus { border-color: var(--fire); }
select { cursor: pointer; }
.input-row { display: flex; align-items: center; gap: 0.5rem; }
.x-divider { color: rgba(255,223,184,0.3); font-weight: 700; }

/* ---- Results / Output Preview ---- */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 1rem; }
.stat-box {
    background: rgba(17,17,17,0.5); padding: 1.1rem 0.8rem; border-radius: 12px;
    text-align: center; border: 1px solid rgba(255,223,184,0.05);
}
.stat-label { display: block; font-size: 0.72rem; color: rgba(255,223,184,0.4); margin-bottom: 0.3rem; text-transform: uppercase; letter-spacing: 0.06em; }
.stat-value { display: block; font-size: 1.5rem; font-weight: 700; color: var(--fire); }

/* Sheet Tabs */
.sheet-tabs { display: flex; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.sheet-tab {
    padding: 6px 16px; border-radius: 8px; border: 1px solid rgba(255,223,184,0.1);
    background: rgba(17,17,17,0.5); color: rgba(255,223,184,0.5); cursor: pointer;
    font-size: 0.85rem; font-family: var(--font-body); transition: all 0.2s;
}
.sheet-tab.active, .sheet-tab:hover { background: rgba(232,91,46,0.15); color: var(--fire); border-color: var(--fire); }

/* Canvas Wrapper */
.canvas-wrapper {
    background: rgba(17,17,17,0.6); border: 1px solid rgba(255,223,184,0.06);
    border-radius: 12px; padding: 12px; margin-bottom: 1rem; overflow: hidden;
}
#nesting-canvas { width: 100%; display: block; border-radius: 8px; }

/* ---- WASM Status ---- */
.wasm-status { display: flex; align-items: center; gap: 10px; padding: 1rem 1.5rem; font-size: 0.85rem; color: rgba(255,223,184,0.45); }
.wasm-status.ready { color: var(--forest-light); }
.status-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.status-dot.loading { background: var(--fire); animation: pulse 1.2s ease-in-out infinite; }
.status-dot.ready { background: var(--forest-light); box-shadow: 0 0 8px rgba(61,135,96,0.5); }

/* ---- Footer ---- */
footer { text-align: center; padding: 1rem 0; color: rgba(255,223,184,0.2); font-size: 0.8rem; }
footer a { color: var(--fire); text-decoration: none; }

/* ---- Loader Container ---- */
.loader-container {
    background: rgba(17,17,17,0.7);
    border: 1px solid rgba(255,223,184,0.1);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    margin-top: 1rem;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    backdrop-filter: blur(8px);
}

.dna-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(232,91,46,0.2);
    border-top-color: var(--fire);
    border-radius: 50%;
    animation: spin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
    margin: 0 auto 1rem auto;
    box-shadow: 0 0 15px rgba(232,91,46,0.4);
}

#loader-text {
    color: var(--cream);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: 0.5px;
}

#loader-stats {
    color: var(--fire);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(0.8); } }

@media (max-width: 600px) {
    header h1 { font-size: 1.8rem; }
    .header-logo { height: 40px; }
    .stats-grid { grid-template-columns: 1fr; }
    .controls { grid-template-columns: 1fr; }
    .parts-grid { grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); }
}

.lang-btn { background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.1); color: var(--cream); padding: 6px 12px; border-radius: var(--radius-sm); font-weight: 600; cursor: pointer; transition: all 0.2s ease; display: inline-flex; align-items: center; justify-content: center; font-size: 0.9rem; min-width: 44px; margin-left: auto; } .lang-btn:hover { background: rgba(255, 255, 255, 0.1); border-color: var(--fire); color: var(--fire); }