/* 
  GRADEO Centralized Design System
  Professional CSS Modularization
*/

:root {
    --o: #FF6A00; --od: #E05500;
    --bg: #FFF6ED; --surface: #fff;
    --cardBg: #ffffff;
    --text: #0D0C0B; --muted: #6B6560; --muted2: #A8A29E;
    --cb: rgba(255,106,0,.11);
    --ib: rgba(255,130,30,.11); --id: rgba(255,106,0,.18);
    --border: rgba(0,0,0,0.06);
    --r: 20px; --r2: 16px;
    --sp: cubic-bezier(.34, 1.56, .64, 1);
    --sm: cubic-bezier(0.23, 1, 0.32, 1);
}

[data-theme="dark"] {
    --bg: #0A0A0A; --surface: #141414;
    --cardBg: #1A1A1A;
    --text: #FFFFFF; --muted: #B0B0B0; --muted2: #666666;
    --cb: rgba(255,106,0,.3);
    --ib: rgba(255,106,0,.18); --id: rgba(255,106,0,.4);
    --border: rgba(255,255,255,0.1);
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }

body { 
    background-color: var(--bg); 
    color: var(--text); 
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; 
    min-height: 100vh;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

/* ── NAVIGATION ── */
header.nav { 
    position: sticky; top: 0; z-index: 100; 
    background: var(--bg); backdrop-filter: blur(20px); 
    border-bottom: 1px solid var(--cb); 
    padding: 12px 1.5rem; 
    display: flex; align-items: center; justify-content: space-between; 
}

.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.lw { width: 32px; height: 32px; border-radius: 10px; overflow: hidden; border: 1.5px solid var(--id); box-shadow: 0 2px 8px rgba(255,106,0,.14); transition: transform .3s var(--sp); }
.lw:hover { transform: rotate(8deg) scale(1.1); }
.lw img { width: 100%; height: 100%; object-fit: cover; }
.bn { font-size: 14px; font-weight: 900; letter-spacing: -.4px; }

/* ── LAYOUT ── */
.container { max-width: 1120px; margin: 0 auto; padding: 2rem 1.5rem; }
.wrap { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.page-title { font-size: clamp(28px, 8vw, 42px); font-weight: 950; letter-spacing: -2px; margin-bottom: 8px; }
.page-sub { color: var(--muted); font-size: 14.5px; margin-bottom: 2.5rem; }

.app-grid { display: grid; grid-template-columns: 1fr 360px; gap: 2rem; }
@media (max-width: 1024px) { .app-grid { grid-template-columns: 1fr; } }

.card { background: var(--surface); border: 1.5px solid var(--cb); border-radius: var(--r); padding: 1.5rem; }

/* ── COMPONENTS ── */
.input-group { display: flex; flex-direction: column; gap: 6px; }
.label { font-size: 11px; font-weight: 800; text-transform: uppercase; color: var(--muted); letter-spacing: .05em; }

input, select { 
    background: var(--bg); border: 1.5px solid var(--cb); border-radius: 10px;
    padding: 10px 12px; color: var(--text); font-weight: 700; font-size: 15px;
    outline: none; transition: border-color .2s; width: 100%;
}
input:focus { border-color: var(--o); }

.btn { 
    display: inline-flex; align-items: center; justify-content: center; gap: 8px; 
    padding: 12px 20px; border-radius: 12px; font-weight: 800; 
    cursor: pointer; border: none; transition: all .2s var(--sp); 
    font-family: inherit; user-select: none;
}
.bp { background: var(--o);
    color: #fff;
    box-shadow: 0 4px 14px rgba(255, 106, 0, 0.3);
}

/* ── Grade Card (Print) ── */
@media screen { #print-area { display: none; } }
@media print {
    body * { visibility: hidden; }
    #print-area, #print-area * { visibility: visible; }
    #print-area { position: absolute; left: 0; top: 0; width: 100%; }
}

.gc-container {
    width: 1000px; height: 700px;
    padding: 60px; position: relative;
    background: #fff; border: 20px solid var(--o);
    font-family: 'Syne', sans-serif; overflow: hidden;
    color: #000;
}
.gc-watermark {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%) rotate(-45deg);
    font-size: 180px; font-weight: 950; color: rgba(255, 106, 0, 0.03); pointer-events: none;
}
.gc-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 40px; }
.gc-brand { display: flex; align-items: center; gap: 15px; }
.gc-logo { width: 60px; height: 60px; border-radius: 12px; }
.gc-bn { font-size: 24px; font-weight: 950; letter-spacing: -1px; }
.gc-bt { font-size: 10px; font-weight: 700; color: var(--o); letter-spacing: 2px; }
.gc-stamp { 
    padding: 10px 20px; border: 3px double var(--o); color: var(--o);
    font-weight: 900; transform: rotate(-15deg); font-size: 18px;
}
.gc-main-title { font-size: 48px; font-weight: 950; letter-spacing: -2px; margin-bottom: 30px; }
.gc-student-info { display: flex; gap: 60px; margin-bottom: 40px; }
.gc-field label { display: block; font-size: 12px; font-weight: 700; color: #666; text-transform: uppercase; margin-bottom: 5px; }
.gc-field span { font-size: 20px; font-weight: 800; border-bottom: 2px solid #eee; min-width: 200px; display: inline-block; }

.gc-stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 40px; }
.gc-stat-card { padding: 20px; background: #f9f9f9; border-radius: 15px; }
.gc-stat-card.highlight { background: var(--o); color: #fff; }
.gc-stat-card label { font-size: 11px; font-weight: 700; text-transform: uppercase; opacity: 0.8; }
.gc-stat-val { font-size: 32px; font-weight: 950; margin-top: 5px; }

.gc-table { width: 100%; border-collapse: collapse; margin-bottom: 40px; }
.gc-table th { text-align: left; padding: 12px; border-bottom: 2px solid #000; font-size: 14px; font-weight: 800; }
.gc-table td { padding: 12px; border-bottom: 1px solid #eee; font-size: 15px; font-weight: 600; }

.gc-footer { display: flex; justify-content: space-between; align-items: flex-end; position: absolute; bottom: 60px; left: 60px; right: 60px; }
.gc-meta { font-size: 12px; color: #666; font-weight: 600; line-height: 1.6; }
.gc-qr-area img { width: 80px; height: 80px; border: 1px solid #eee; padding: 5px; }

.bs { background: transparent; border: 1.5px solid var(--id); color: var(--o); }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: scale(.96); }

/* ── MODALS ── */
.mbd { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 9000; align-items: center; justify-content: center; padding: 14px; backdrop-filter: blur(8px); }
[data-theme="dark"] .mbd { background: rgba(0,0,0,.66); }
.mbd.on { display: flex; animation: bdIn .16s ease both; }

.mbox { 
    background: var(--surface); border: 1.5px solid var(--cb); border-radius: 24px; 
    max-width: 400px; width: 100%; max-height: 85vh; overflow: hidden; 
    display: flex; flex-direction: column; box-shadow: 0 20px 60px rgba(0,0,0,.18); 
    animation: popIn .26s var(--sp) both; 
}

@keyframes bdIn { from { opacity: 0 } to { opacity: 1 } }
@keyframes popIn { from { transform: scale(.90) translateY(14px); opacity: 0 } to { transform: none; opacity: 1 } }

.mhd { padding: 12px 15px; border-bottom: 1px solid var(--cb); display: flex; justify-content: space-between; align-items: center; }
.mhd strong { font-size: 14px; font-weight: 900; color: var(--text); }
.mhd button { background: transparent; border: none; cursor: pointer; font-size: 17px; color: var(--muted); }

/* ── SIGN IN MODAL SPECIFICS ── */
.siBody { padding: 20px 20px 24px; display: flex; flex-direction: column; gap: 10px; }
.siSub { font-size: 13px; color: var(--muted); font-weight: 500; line-height: 1.45; margin-bottom: 2px; }
.siBtn { 
    width: 100%; display: flex; align-items: center; justify-content: center; gap: 10px; 
    padding: 13px 16px; border-radius: 14px; border: 1.5px solid var(--cb); 
    background: var(--surface); color: var(--text); font-family: inherit; font-size: 14px; 
    font-weight: 700; cursor: pointer; transition: all .18s var(--sp); 
    box-shadow: 0 1px 3px rgba(0,0,0,.06); position: relative; overflow: hidden; 
}
.siBtn:hover { border-color: var(--o); transform: translateY(-2px); box-shadow: 0 4px 14px rgba(0,0,0,.10); }

.siEmailForm { display: flex; flex-direction: column; gap: 8px; }
.siDivider { display: flex; align-items: center; gap: 10px; color: var(--muted2); font-size: 11px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; margin: 2px 0; }
.siDivider::before, .siDivider::after { content: ""; flex: 1; height: 1px; background: var(--cb); }
.siInput { width: 100%; padding: 11px 14px; border-radius: 12px; border: 1.5px solid var(--cb); background: var(--bg); color: var(--text); font-family: inherit; font-size: 14px; outline: none; transition: border-color .14s; }
.siEmailBtns { display: flex; gap: 8px; }
.siEmailAction { flex: 1; padding: 11px 14px !important; font-size: 13px !important; }
.siFootNote { font-size: 11px; color: var(--muted2); font-weight: 500; line-height: 1.5; margin-top: 4px; }
.siFootNote a { color: var(--o); text-decoration: underline; }

.siBtn.loading { opacity: .6; pointer-events: none; }
.siBtn.loading::before { 
    content: ""; position: absolute; inset: 0; 
    background: linear-gradient(90deg, transparent, rgba(255,255,255,.15), transparent); 
    animation: siBtnLoad 1.1s ease-in-out infinite; 
}
@keyframes siBtnLoad { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }

/* ── SKELETON LOADING ── */
.skel { background: linear-gradient(90deg, var(--surface) 25%, var(--bg) 50%, var(--surface) 75%); background-size: 200% 100%; animation: skel-shift 1.5s infinite linear; border-radius: 8px; }
@keyframes skel-shift { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
[data-theme="dark"] .skel { background: linear-gradient(90deg, #1A1A1A 25%, #252525 50%, #1A1A1A 75%); background-size: 200% 100%; }

/* ── TRUST BADGES ── */
.trust-badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; background: rgba(34,197,94,0.1); color: #16a34a; border-radius: 99px; font-size: 10px; font-weight: 900; text-transform: uppercase; letter-spacing: .5px; border: 1px solid rgba(34,197,94,0.2); }
.trust-badge svg { width: 12px; height: 12px; }

/* ── HYPE BRANDING ── */
.engine-tag { font-size: 9px; font-weight: 800; color: var(--muted2); text-transform: uppercase; letter-spacing: 2px; margin-top: 12px; display: block; opacity: 0.6; }

/* ── PRINTING ── */
#print-area { display: none; }
@media print {
    body * { visibility: hidden; }
    body { background: #fff !important; }
    #print-area, #print-area * { visibility: visible; }
    #print-area {
        display: block; position: absolute; left: 0; top: 0; width: 100%;
        padding: 20px; font-family: "Times New Roman", Times, serif; color: #000;
    }
    .gc-header { text-align: center; margin-bottom: 30px; border-bottom: 2px solid #000; padding-bottom: 10px; }
    .gc-logo { width: 60px; height: 60px; margin-bottom: 10px; }
    .gc-title { font-size: 24px; font-weight: bold; margin: 0; text-transform: uppercase; }
    .gc-subtitle { font-size: 16px; margin: 5px 0 0 0; }
    .gc-student { display: flex; justify-content: space-between; margin-bottom: 20px; font-size: 16px; }
    .gc-table { width: 100%; border-collapse: collapse; margin-bottom: 30px; }
    .gc-table th, .gc-table td { border: 1px solid #000; padding: 10px; text-align: center; }
    .gc-table th { background-color: #f0f0f0; font-weight: bold; }
    .gc-table td.text-left { text-align: left; }
    .gc-result { display: flex; justify-content: flex-end; font-size: 16px; font-weight: bold; margin-bottom: 40px; gap: 20px; }
    .gc-footer { display: flex; justify-content: space-between; margin-top: 50px; }
    .gc-sign { border-top: 1px solid #000; width: 200px; text-align: center; padding-top: 5px; }
    #print-area::before {
        content: "GRADEO";
        position: fixed;
        top: 50%; left: 50%;
        transform: translate(-50%, -50%) rotate(-30deg);
        font-size: 120px;
        font-weight: 950;
        color: rgba(0,0,0,0.03);
        z-index: -1;
        white-space: nowrap;
        pointer-events: none;
    }
}