/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --primary: hsl(220, 70%, 50%);
  --primary-dark: hsl(220, 70%, 40%);
  --primary-fg: #fff;
  --success: hsl(142, 71%, 40%);
  --success-bg: hsl(142, 71%, 95%);
  --warning: hsl(38, 92%, 45%);
  --warning-bg: hsl(38, 92%, 95%);
  --destructive: hsl(0, 72%, 51%);
  --destructive-bg: hsl(0, 72%, 96%);
  --muted: hsl(215, 16%, 47%);
  --muted-bg: hsl(210, 40%, 96%);
  --border: hsl(214, 32%, 91%);
  --bg: #f8fafc;
  --card: #fff;
  --foreground: hsl(222, 47%, 11%);
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -2px rgba(0,0,0,.05);
}
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--foreground); line-height: 1.5; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== GRADIENTS ===== */
.gradient-hero {
  background: linear-gradient(135deg, hsl(220,70%,45%) 0%, hsl(260,60%,50%) 50%, hsl(280,65%,45%) 100%);
}
.gradient-primary {
  background: linear-gradient(135deg, hsl(220,70%,50%) 0%, hsl(240,65%,55%) 100%);
}

/* ===== HERO ===== */
.hero { padding: 4rem 1rem; text-align: center; }
.hero-icon-wrap { display: inline-flex; background: rgba(255,255,255,.15); backdrop-filter: blur(8px); border-radius: 16px; padding: 1rem; margin-bottom: 1.5rem; }
.hero h1 { font-size: clamp(1.8rem, 5vw, 3rem); font-weight: 900; color: #fff; margin-bottom: 1rem; letter-spacing: -0.02em; }
.hero p { font-size: 1.1rem; color: rgba(255,255,255,.85); max-width: 520px; margin: 0 auto; }

/* ===== CARD ===== */
.card { background: var(--card); border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow); overflow: hidden; }
.card-header { padding: 1rem 1.5rem; border-bottom: 1px solid var(--border); }
.card-header.gradient-primary { border: none; }
.card-header h2, .card-header h3 { color: #fff; font-weight: 700; display: flex; align-items: center; gap: .5rem; }
.card-body { padding: 1.5rem; }
.card-body-sm { padding: 1rem; }

/* ===== LOOKUP FORM ===== */
.lookup-wrap { max-width: 640px; margin: -2rem auto 0; padding: 0 1rem; position: relative; z-index: 10; }
.lookup-card { padding: 2rem; box-shadow: var(--shadow-lg); border: none; }
.form-label { display: block; font-size: .875rem; font-weight: 600; margin-bottom: .4rem; }
.form-control { width: 100%; padding: .6rem .9rem; border: 1px solid var(--border); border-radius: 8px; font-size: 1rem; outline: none; transition: border-color .2s; }
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px hsl(220,70%,50%,.1); }
.form-select { appearance: none; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23666' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 12px center / 12px 8px, var(--card); }
.input-row { display: flex; gap: .75rem; }
.input-row .form-control { flex: 1; height: 48px; font-size: 1.1rem; }
.hint { font-size: .8rem; color: var(--muted); margin-top: .4rem; }

/* ===== BUTTONS ===== */
.btn { display: inline-flex; align-items: center; gap: .4rem; padding: .55rem 1.1rem; border: none; border-radius: 8px; font-size: .875rem; font-weight: 600; cursor: pointer; transition: all .15s; white-space: nowrap; }
.btn-hero { background: linear-gradient(135deg, hsl(220,70%,50%), hsl(260,60%,55%)); color: #fff; padding: .75rem 1.5rem; font-size: 1rem; border-radius: 10px; height: 48px; }
.btn-hero:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(99,102,241,.4); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--foreground); }
.btn-outline:hover { background: var(--muted-bg); }
.btn-ghost { background: transparent; color: var(--muted); }
.btn-ghost:hover { background: var(--muted-bg); }
.btn-sm { padding: .35rem .75rem; font-size: .8rem; }
.btn-lg { padding: .75rem 1.5rem; font-size: 1rem; }
.btn:disabled { opacity: .6; cursor: not-allowed; }

/* ===== BADGES ===== */
.badge { display: inline-flex; align-items: center; padding: .2rem .65rem; border-radius: 9999px; font-size: .75rem; font-weight: 600; }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-destructive { background: var(--destructive-bg); color: var(--destructive); }
.badge-muted { background: var(--muted-bg); color: var(--muted); }
.badge-primary { background: hsl(220,70%,95%); color: var(--primary); }
.badge-outline { background: transparent; border: 1px solid currentColor; }
.badge-white { background: rgba(255,255,255,.2); color: #fff; }

/* ===== STUDENT HEADER ===== */
.student-header { text-align: center; margin-bottom: 1.5rem; padding: 1.5rem; background: var(--card); border-radius: var(--radius); border: 1px solid var(--border); }
.student-header h2 { font-size: 1.6rem; font-weight: 800; }
.student-header p { color: var(--muted); font-size: .9rem; }

/* ===== TABS ===== */
.tabs-wrap { margin-bottom: 1.5rem; }
.tabs-list { display: flex; flex-wrap: wrap; gap: .3rem; background: var(--muted-bg); padding: .3rem; border-radius: 10px; margin-bottom: 1.5rem; }
.tab-btn { padding: .5rem .9rem; border: none; border-radius: 8px; font-size: .8rem; font-weight: 600; cursor: pointer; background: transparent; color: var(--muted); display: flex; align-items: center; gap: .35rem; transition: all .15s; white-space: nowrap; }
.tab-btn.active { background: var(--card); color: var(--foreground); box-shadow: var(--shadow); }
.tab-btn svg { width: 14px; height: 14px; flex-shrink: 0; }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ===== INNER TABS ===== */
.inner-tabs-list { display: flex; flex-wrap: wrap; gap: .25rem; padding: .25rem; background: var(--muted-bg); border-radius: 8px; margin-bottom: 1rem; }
.inner-tab-btn { padding: .4rem .7rem; border: none; border-radius: 6px; font-size: .75rem; font-weight: 600; cursor: pointer; background: transparent; color: var(--muted); display: flex; align-items: center; gap: .3rem; transition: all .15s; white-space: nowrap; }
.inner-tab-btn.active { background: var(--card); color: var(--foreground); box-shadow: var(--shadow); }
.inner-tab-content { display: none; }
.inner-tab-content.active { display: block; }

/* ===== TABLES ===== */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .875rem; }
th { text-align: left; padding: .65rem 1rem; font-weight: 600; background: var(--muted-bg); border-bottom: 2px solid var(--border); white-space: nowrap; }
td { padding: .6rem 1rem; border-bottom: 1px solid var(--border); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--muted-bg); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.font-mono { font-family: 'Courier New', monospace; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.text-sm { font-size: .875rem; }
.text-xs { font-size: .75rem; }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-destructive { color: var(--destructive); }
.text-muted { color: var(--muted); }
.text-primary { color: var(--primary); }

/* ===== GRID ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
@media (max-width: 768px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .grid-2 { grid-template-columns: 1fr 1fr; } .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; } }

/* ===== STAT CARDS ===== */
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; text-align: center; }
.stat-card .stat-icon { display: flex; justify-content: center; margin-bottom: .5rem; color: var(--primary); }
.stat-card .stat-val { font-size: 1.6rem; font-weight: 800; }
.stat-card .stat-label { font-size: .75rem; color: var(--muted); margin-top: .2rem; }

/* ===== PROGRESS BAR ===== */
.progress-wrap { background: var(--muted-bg); border-radius: 9999px; overflow: hidden; }
.progress-bar { height: 100%; border-radius: 9999px; transition: width .5s ease; }
.progress-h2 { height: .5rem; }
.progress-h3 { height: .75rem; }
.progress-h4 { height: 1rem; }
.progress-success { background: var(--success); }
.progress-warning { background: var(--warning); }
.progress-primary { background: var(--primary); }
.progress-destructive { background: var(--destructive); }

/* ===== AI REPORT ===== */
.report-body { padding: 1.5rem; line-height: 1.8; }
.report-body h2 { font-size: 1.25rem; font-weight: 700; margin: 1rem 0 .5rem; }
.report-body h3 { font-size: 1.05rem; font-weight: 600; margin: 1rem 0 .4rem; }
.report-body h3.red { color: var(--destructive); }
.report-body p { color: #4a5568; margin-bottom: .5rem; }
.report-body .bullet-red { display: flex; align-items: center; gap: .5rem; padding: .2rem 0; }
.report-body .bullet-red::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--destructive); flex-shrink: 0; }
.report-body strong { color: var(--foreground); }
.report-body br + br { display: none; }

/* ===== WEAK TOPICS ===== */
.weak-item { display: flex; align-items: center; justify-content: space-between; padding: .75rem 1rem; border-radius: 8px; border: 1px solid transparent; }
.weak-item.status-weak { background: var(--destructive-bg); border-color: hsl(0,72%,85%); }
.weak-item.status-needs { background: var(--warning-bg); border-color: hsl(38,92%,80%); }
.weak-item.status-ok { background: var(--success-bg); border-color: hsl(142,71%,80%); }
.weak-item-info { display: flex; align-items: flex-start; gap: .5rem; min-width: 0; flex: 1; margin-right: .5rem; }
.weak-item-title { font-weight: 600; font-size: .875rem; }
.weak-item-sub { font-size: .75rem; color: var(--muted); margin-top: .1rem; }

/* ===== GOAL TRACKER ===== */
.goal-exam-row { display: flex; align-items: center; gap: .75rem; margin-bottom: .5rem; }
.goal-bar-wrap { flex: 1; background: var(--muted-bg); border-radius: 9999px; height: .625rem; overflow: hidden; }
.goal-bar { height: 100%; border-radius: 9999px; }
.milestone-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; }
.milestone-box { border-radius: 10px; border: 1px solid var(--border); padding: .75rem; text-align: center; }
.milestone-box.reached { border-color: var(--success); background: var(--success-bg); }

/* ===== HIGH SCHOOL LIST ===== */
.hs-trigger { width: 100%; background: none; border: none; cursor: pointer; padding: 0; text-align: left; }
.hs-content { display: none; }
.hs-content.open { display: block; }
.hs-item { display: flex; align-items: center; justify-content: space-between; padding: .75rem 1.25rem; border-bottom: 1px solid var(--border); }
.hs-item:hover { background: var(--muted-bg); }
.hs-item:last-child { border-bottom: none; }
.hs-district-filter { display: flex; flex-wrap: wrap; gap: .35rem; padding: .75rem 1rem; background: var(--muted-bg); border-bottom: 1px solid var(--border); }
.district-btn { padding: .25rem .75rem; border-radius: 9999px; border: 1px solid var(--border); font-size: .75rem; font-weight: 600; cursor: pointer; background: var(--card); color: var(--muted); }
.district-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== ACHIEVEMENT TABLE ===== */
.ach-subject-block { margin-bottom: 1.5rem; }
.ach-subject-block:last-child { margin-bottom: 0; }

/* ===== LEARNING / STUDY ===== */
.learning-card { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 1rem; }
.learning-card-hdr { padding: .9rem 1.25rem; background: hsl(215,40%,97%); border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: .5rem; }
.learning-card-body { padding: 1.25rem; }
.learning-section { margin-bottom: 1rem; }
.learning-section h4 { font-weight: 600; font-size: .875rem; margin-bottom: .3rem; display: flex; align-items: center; gap: .4rem; }

/* ===== STUDY PLAN ===== */
.day-card { border: 2px solid var(--border); border-radius: 12px; overflow: hidden; margin-bottom: .75rem; }
.day-card-hdr { display: flex; align-items: center; justify-content: space-between; padding: .75rem 1.25rem; background: var(--muted-bg); border-bottom: 1px solid var(--border); }
.day-entry { display: flex; align-items: center; justify-content: space-between; padding: .6rem 1.25rem; border-bottom: 1px solid var(--border)/50; }
.day-entry:last-child { border-bottom: none; }
.day-level-bar { width: 8px; height: 2rem; border-radius: 4px; flex-shrink: 0; }

/* ===== QUIZ (Weak Topic Learning) ===== */
.quiz-option { display: flex; align-items: center; gap: .75rem; width: 100%; padding: 1rem; border: 2px solid var(--border); border-radius: 10px; text-align: left; cursor: pointer; background: var(--card); margin-bottom: .5rem; font-size: .925rem; }
.quiz-option:hover:not(:disabled) { border-color: var(--primary); background: hsl(220,70%,98%); }
.quiz-option.correct { border-color: var(--success); background: var(--success-bg); }
.quiz-option.wrong { border-color: var(--destructive); background: var(--destructive-bg); }
.quiz-option.faded { opacity: .45; }
.quiz-option:disabled { cursor: default; }
.quiz-option-letter { width: 32px; height: 32px; border-radius: 50%; border: 2px solid currentColor; display: flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }
.quiz-explanation { padding: 1rem; border-radius: 8px; border: 2px solid; margin-top: .75rem; }
.quiz-explanation.correct { border-color: hsl(142,71%,75%); background: var(--success-bg); }
.quiz-explanation.wrong { border-color: hsl(0,72%,80%); background: var(--destructive-bg); }
.quiz-topic-list a { display: block; width: 100%; text-align: left; padding: .5rem .75rem; border-radius: 6px; font-size: .8rem; border: none; cursor: pointer; background: var(--muted-bg); color: var(--muted); margin-bottom: .3rem; }
.quiz-topic-list a.active { background: hsl(220,70%,93%); border: 1px solid hsl(220,70%,70%); color: var(--primary); font-weight: 600; }
.quiz-topic-list a.done { background: var(--success-bg); color: var(--success); }
.celebration { text-align: center; padding: 2rem; }
.stars { display: flex; justify-content: center; gap: .4rem; margin: 1rem 0; }
.star { font-size: 1.8rem; }
.confetti-dot { position: absolute; width: 8px; height: 8px; border-radius: 50%; animation: bounce 1.5s infinite; }
@keyframes bounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }

/* ===== LAYOUT ===== */
.container { max-width: 1100px; margin: 0 auto; padding: 0 1rem; }
.section { padding: 2.5rem 0; }
.space-y > * + * { margin-top: 1.5rem; }
.space-y-sm > * + * { margin-top: 1rem; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: .25rem; }
.gap-2 { gap: .5rem; }
.gap-3 { gap: .75rem; }
.gap-4 { gap: 1rem; }
.flex-1 { flex: 1; }
.min-w-0 { min-width: 0; }
.shrink-0 { flex-shrink: 0; }
.w-full { width: 100%; }
.mb-2 { margin-bottom: .5rem; }
.mb-3 { margin-bottom: .75rem; }
.mb-4 { margin-bottom: 1rem; }
.mt-1 { margin-top: .25rem; }
.mt-2 { margin-top: .5rem; }
.mt-3 { margin-top: .75rem; }
.mt-4 { margin-top: 1rem; }
.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.break-words { word-break: break-word; }
.hidden { display: none; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }
.rounded-full { border-radius: 9999px; }
.chart-wrap { position: relative; width: 100%; }

/* ===== FOOTER ===== */
footer { text-align: center; padding: 2rem; font-size: .875rem; color: var(--muted); border-top: 1px solid var(--border); margin-top: 2rem; }

/* ===== ALERT / INFO ===== */
.alert { padding: .875rem 1.25rem; border-radius: 8px; border: 1px solid; font-size: .875rem; display: flex; align-items: flex-start; gap: .5rem; }
.alert-destructive { background: var(--destructive-bg); border-color: hsl(0,72%,85%); color: var(--destructive); }
.alert-info { background: hsl(220,70%,96%); border-color: hsl(220,70%,85%); color: var(--primary); }

/* ===== CHEVRON ROTATE ===== */
.chevron { transition: transform .2s; }
.chevron.open { transform: rotate(180deg); }

/* ===== PRINT-LIKE CARD ===== */
.download-note { font-size: .8rem; color: var(--muted); margin-bottom: .5rem; }

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .hero h1 { font-size: 1.6rem; }
  .lookup-card { padding: 1.25rem; }
  .input-row { flex-direction: column; }
  .tab-btn span { display: none; }
  .inner-tab-btn span { display: none; }
  th.hide-sm, td.hide-sm { display: none; }
  .milestone-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 641px) {
  th.show-sm-only, td.show-sm-only { display: none; }
}