/* =========================================================
   AI SQ Grader — standalone stylesheet
   Base layout + glass + pipeline + essay-grader + modal
   ========================================================= */

:root {
    --eg-primary: #e84393;
    --eg-primary-glow: rgba(232, 67, 147, 0.25);
    --eg-accent: #fd79a8;
    --eg-correct: #00b894;
    --eg-possible: #fdcb6e;
    --eg-wrong: #d63031;
    --eg-extra: #6c5ce7;
    --eg-glass: rgba(255, 255, 255, 0.6);
    --eg-border: rgba(232, 67, 147, 0.2);
    --text-color: #221b3f;
    --text-muted: #6f6a85;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-color);
    background: linear-gradient(135deg, #fff0f6, #f3f0ff);
    background-attachment: fixed;
    min-height: 100vh;
    line-height: 1.6;
}

/* Header / Footer */
.site-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 1rem 2rem; backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.4);
    border-bottom: 1px solid rgba(255, 255, 255, 0.6);
    position: sticky; top: 0; z-index: 50;
}
.brand { font-weight: 800; font-size: 1.15rem; color: var(--eg-primary); display: flex; align-items: center; gap: 0.5rem; }
.header-btn {
    background: var(--eg-primary); color: #fff; border: none;
    padding: 0.55rem 1.1rem; border-radius: 50px; font-weight: 600; cursor: pointer;
    display: inline-flex; align-items: center; gap: 0.4rem; transition: transform 0.15s, box-shadow 0.15s;
}
.header-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 16px var(--eg-primary-glow); }
.site-footer { text-align: center; padding: 2rem 1rem 3rem; color: var(--text-muted); font-size: 0.85rem; }

/* Page / Hero */
.page { max-width: 920px; margin: 0 auto; padding: 2rem 1rem; }
.blog-hero { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; padding: 2rem 1rem 2.5rem; }
.hero-copy .eyebrow { text-transform: uppercase; letter-spacing: 2px; font-size: 0.75rem; color: var(--eg-primary); font-weight: 700; margin: 0 0 0.5rem; }
.hero-copy h1 { font-size: 2.2rem; margin: 0 0 0.8rem; }
.hero-copy p { color: var(--text-muted); max-width: 560px; margin: 0; }
.hero-badge { display: inline-block; color: #fff; padding: 0.5rem 1.1rem; border-radius: 50px; font-weight: 700; font-size: 0.85rem; }

/* Config banner */
.config-banner {
    display: flex; align-items: center; gap: 0.6rem;
    background: rgba(253, 203, 110, 0.18); border: 1px solid rgba(253, 203, 110, 0.5);
    color: #8a6d00; padding: 0.9rem 1.2rem; border-radius: 12px; margin: 0 auto 1.5rem;
    max-width: 900px; font-size: 0.92rem;
}
.link-btn { background: none; border: none; color: var(--eg-primary); font-weight: 700; cursor: pointer; text-decoration: underline; margin-left: auto; }

/* Glass panel */
.glass-panel {
    background: var(--eg-glass); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--eg-border); border-radius: 20px; box-shadow: 0 8px 32px rgba(0,0,0,0.05);
}

/* Pipeline */
.pipeline-bar {
    display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 0.4rem;
    padding: 1rem 1.5rem; margin: 0 auto 2rem; max-width: 900px; border-radius: 16px;
}
.pipeline-step { display: flex; flex-direction: column; align-items: center; gap: 0.4rem; padding: 0.7rem 1rem; border-radius: 12px; font-size: 0.8rem; color: #aaa; transition: all 0.3s; min-width: 70px; text-align: center; }
.pipeline-step i { font-size: 1.3rem; }
.pipeline-step.active { color: var(--eg-primary); background: var(--eg-primary-glow); font-weight: 600; }
.pipeline-step.done { color: var(--eg-correct); }
.pipeline-arrow { color: #ccc; font-size: 0.9rem; padding: 0 0.2rem; }

/* Cards */
.grader-card { max-width: 900px; margin: 0 auto 1.5rem; padding: 2rem; transition: opacity 0.3s, filter 0.3s; }
.grader-card.locked { opacity: 0.5; pointer-events: none; filter: grayscale(0.4); }
.grader-card h2 { font-size: 1.2rem; font-weight: 700; color: var(--text-color); margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.6rem; }
.grader-card h2 i { color: var(--eg-primary); }
.section-hint { font-size: 0.9rem; color: #666; margin-bottom: 1.5rem; }
.section-hint a { color: var(--eg-primary); }

/* Form */
.paper-form .form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1rem; margin-bottom: 1rem; }
.paper-form .form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.paper-form .form-group.full { flex: 1 1 100%; grid-column: 1 / -1; }
.paper-form label { font-size: 0.85rem; font-weight: 600; color: #444; }
.paper-form select {
    padding: 0.7rem 1rem; border: 1.5px solid rgba(232, 67, 147, 0.3); border-radius: 10px;
    background: rgba(255,255,255,0.9); font-size: 0.9rem; color: var(--text-color); cursor: pointer;
}
.paper-form select:focus { outline: none; border-color: var(--eg-primary); box-shadow: 0 0 0 3px var(--eg-primary-glow); }
.deepseek-box { background: rgba(255,255,255,0.4); padding: 10px; border-radius: 8px; }
.checkbox-label { display: flex; align-items: center; gap: 8px; cursor: pointer; font-size: 0.9rem; }
.checkbox-label input { width: auto; }

/* Tabs / Dropzone */
.upload-tabs { display: flex; gap: 0.5rem; margin-bottom: 1.2rem; }
.tab-btn { padding: 0.5rem 1.2rem; border: 1.5px solid var(--eg-border); border-radius: 8px; background: transparent; font-size: 0.9rem; cursor: pointer; color: #666; }
.tab-btn.active { background: var(--eg-primary-glow); border-color: var(--eg-primary); color: var(--eg-primary); font-weight: 600; }
.dropzone { border: 2px dashed rgba(232, 67, 147, 0.35); border-radius: 16px; padding: 2.5rem; text-align: center; cursor: pointer; transition: all 0.25s; background: rgba(255,255,255,0.4); }
.dropzone:hover, .dropzone.dragging { border-color: var(--eg-primary); background: var(--eg-primary-glow); }
.dropzone-icon { font-size: 2.5rem; color: var(--eg-accent); margin-bottom: 0.8rem; display: block; }
.dropzone p { color: #666; margin: 0.5rem 0 1rem; font-size: 0.9rem; }
.btn-upload { padding: 0.6rem 1.4rem; border: 1.5px solid var(--eg-primary); border-radius: 8px; background: transparent; color: var(--eg-primary); font-weight: 600; cursor: pointer; }
.btn-upload:hover { background: var(--eg-primary); color: #fff; }

.ms-upload-section { border-color: rgba(253, 203, 110, 0.4) !important; background: rgba(253, 203, 110, 0.06) !important; }
.ms-upload-row { margin-top: 0.8rem; }
.ms-upload-label { display: flex; align-items: center; gap: 0.8rem; padding: 1rem 1.5rem; border: 2px dashed rgba(253, 203, 110, 0.6); border-radius: 12px; cursor: pointer; background: rgba(255, 255, 255, 0.5); font-size: 0.95rem; color: #555; max-width: 420px; }
.ms-upload-label:hover { border-color: #fdcb6e; background: rgba(253, 203, 110, 0.12); color: #333; }
.ms-upload-label i { font-size: 1.4rem; color: #fdcb6e; }
.ms-upload-label.has-file { border-color: #00b894; color: #00b894; }
.ms-upload-label.has-file i { color: #00b894; }
#manualMsInput { width: 0.1px; height: 0.1px; opacity: 0; position: absolute; z-index: -1; }

.upload-info { margin-top: 1rem; padding: 0.8rem 1.2rem; background: rgba(0, 184, 148, 0.1); border: 1px solid rgba(0, 184, 148, 0.3); border-radius: 10px; font-size: 0.9rem; color: var(--eg-correct); }
.img-preview-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 0.8rem; margin-top: 1rem; }
.img-preview-grid img { width: 100%; aspect-ratio: 3/4; object-fit: cover; border-radius: 8px; border: 2px solid rgba(232, 67, 147, 0.2); }

/* Buttons */
.form-submit { display: flex; justify-content: center; }
.btn-generate {
    padding: 0.9rem 2.5rem; background: linear-gradient(135deg, var(--eg-primary), var(--eg-accent));
    color: #fff; font-size: 1rem; font-weight: 700; border: none; border-radius: 50px; cursor: pointer;
    box-shadow: 0 4px 20px var(--eg-primary-glow); transition: all 0.2s;
}
.btn-generate:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 8px 30px var(--eg-primary-glow); }
.btn-generate:disabled { opacity: 0.5; cursor: not-allowed; }

/* Progress */
.progress-log { background: #1a1a2e; border-radius: 12px; padding: 1rem 1.2rem; font-family: 'Courier New', monospace; font-size: 0.85rem; color: #a8e6cf; max-height: 250px; overflow-y: auto; margin: 1rem 0; }
.progress-log .log-line { margin: 0.3rem 0; animation: fadeIn 0.3s ease; }
.progress-log .log-line.error { color: #fd79a8; }
.progress-log .log-line.success { color: #55efc4; }
.progress-log .log-line.info { color: #74b9ff; }
.progress-bar-wrap { background: rgba(0,0,0,0.08); border-radius: 50px; height: 8px; overflow: hidden; margin-top: 0.5rem; }
.progress-bar-fill { height: 100%; background: linear-gradient(90deg, var(--eg-primary), var(--eg-accent)); border-radius: 50px; transition: width 0.5s ease; }

/* Results */
.results-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 1rem; }
.score-summary { display: flex; gap: 1rem; }
.score-box { text-align: center; background: rgba(255,255,255,0.7); border-radius: 12px; padding: 0.7rem 1.2rem; border: 1px solid var(--eg-border); }
.score-label { display: block; font-size: 0.75rem; color: #888; margin-bottom: 0.2rem; }
.score-val { font-size: 1.4rem; font-weight: 800; color: var(--eg-primary); }
.legend-row { display: flex; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.badge { padding: 0.3rem 0.8rem; border-radius: 50px; font-size: 0.8rem; font-weight: 700; }
.badge-correct { background: rgba(0, 184, 148, 0.15); color: #00b894; border: 1px solid rgba(0,184,148,0.3); }
.badge-possible { background: rgba(253, 203, 110, 0.2); color: #e0a800; border: 1px solid rgba(253,203,110,0.4); }
.badge-wrong { background: rgba(214, 48, 49, 0.12); color: #c0392b; border: 1px solid rgba(214,48,49,0.3); }
.badge-extra { background: rgba(108, 92, 231, 0.12); color: #6c5ce7; border: 1px solid rgba(108,92,231,0.3); }

.question-card { background: #fff; border-radius: 16px; margin-bottom: 1.2rem; border: 1px solid rgba(0,0,0,0.06); overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,0.04); }
.question-header { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.5rem; background: linear-gradient(135deg, rgba(232,67,147,0.06), rgba(253,121,168,0.06)); border-bottom: 1px solid rgba(0,0,0,0.05); cursor: pointer; user-select: none; }
.question-title { font-weight: 700; font-size: 1rem; color: var(--text-color); }
.question-score { font-weight: 700; font-size: 0.9rem; color: var(--eg-primary); }
.question-body { padding: 1rem 1.5rem; }
.mark-point-row { display: grid; grid-template-columns: 1fr 100px 1fr; gap: 1rem; padding: 0.9rem 0; border-bottom: 1px solid rgba(0,0,0,0.05); align-items: start; animation: fadeIn 0.3s ease; }
.mark-point-row:last-child { border-bottom: none; }
.mp-description { font-size: 0.85rem; color: #555; line-height: 1.5; }
.mp-description strong { color: var(--text-color); display: block; margin-bottom: 0.2rem; }
.mp-status { display: flex; justify-content: center; }
.mp-reason { font-size: 0.83rem; color: #666; font-style: italic; line-height: 1.5; }
.student-answer-box { background: rgba(116, 185, 255, 0.08); border: 1px solid rgba(116, 185, 255, 0.2); border-radius: 8px; padding: 0.6rem 0.8rem; font-size: 0.82rem; color: #445; margin-top: 0.5rem; }
.disclaimer-note { margin-top: 2rem; padding: 1rem 1.2rem; background: rgba(253, 203, 110, 0.15); border: 1px solid rgba(253,203,110,0.4); border-radius: 12px; font-size: 0.85rem; color: #7d6608; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

/* Settings Modal */
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.45); backdrop-filter: blur(4px); z-index: 999; display: flex; align-items: center; justify-content: center; padding: 1rem; }
.modal-content { width: 100%; max-width: 560px; max-height: 90vh; overflow-y: auto; padding: 2rem; }
.modal-content h3 { margin: 0 0 0.6rem; display: flex; align-items: center; gap: 0.5rem; }
.modal-desc { font-size: 0.9rem; color: #666; margin-bottom: 1.5rem; }
.line-config { border: 1px solid var(--eg-border); border-radius: 12px; padding: 1rem 1.2rem; margin-bottom: 1.2rem; background: rgba(255,255,255,0.4); }
.line-config h4 { margin: 0 0 0.8rem; color: var(--eg-primary); font-size: 1rem; }
.modal-content .form-group { margin-bottom: 1rem; display: flex; flex-direction: column; }
.modal-content label { margin-bottom: 0.4rem; font-weight: 600; font-size: 0.85rem; color: #444; }
.modal-content input { width: 100%; box-sizing: border-box; padding: 0.7rem 0.9rem; border-radius: 10px; border: 1px solid rgba(0,0,0,0.12); outline: none; font-size: 0.95rem; }
.modal-content input:focus { border-color: var(--eg-primary); }
.field-hint { display: block; margin-top: 0.4rem; color: #888; font-size: 0.78rem; line-height: 1.4; }
.modal-actions { display: flex; justify-content: flex-end; gap: 1rem; margin-top: 1.5rem; }
.btn-primary { background: var(--eg-primary); color: #fff; border: none; padding: 0.7rem 1.5rem; border-radius: 10px; font-weight: 600; cursor: pointer; }
.btn-secondary { background: transparent; color: #666; border: 1px solid rgba(0,0,0,0.12); padding: 0.7rem 1.5rem; border-radius: 10px; font-weight: 600; cursor: pointer; }

@media (max-width: 700px) {
    .pipeline-arrow { display: none; }
    .pipeline-step span { font-size: 0.65rem; }
    .paper-form .form-row { grid-template-columns: 1fr 1fr; }
    .blog-hero { grid-template-columns: 1fr; text-align: center; }
    .results-header { flex-direction: column; }
    .score-summary { width: 100%; justify-content: space-around; }
    .mark-point-row { grid-template-columns: 1fr; }
    .mp-status { justify-content: flex-start; }
}