/* style.css (The Final, Publishable Version) */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&display=swap');

:root {
    --primary-color: #0A84FF; --accent-color: #30D158; --danger-color: #FF453A;
    --warning-color: #FF9F0A; --info-color: #5AC8FA;
    --bg-primary: #F2F2F7; --bg-secondary: #FFFFFF; --bg-tertiary: #E5E5EA;
    --bg-current-term: #F9F9FC;
    --text-primary: #1D1D1F; --text-secondary: #6E6E73; --text-tertiary: #8A8A8E;
    --text-on-primary: #FFFFFF; --border-color: #EFEFF4;
    --shadow-soft: 0 4px 15px rgba(0, 0, 0, 0.06);
    --radius-l: 20px; --radius-m: 12px; --radius-s: 8px;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", Roboto, Helvetica, Arial, sans-serif; margin: 0; background-color: var(--bg-primary); color: var(--text-primary); display: flex; justify-content: center; padding: 1rem; min-height: 100vh; box-sizing: border-box; -webkit-font-smoothing: antialiased; }
.app-container { width: 100%; max-width: 720px; box-sizing: border-box; }
.icon { display: inline-block; width: 1.2em; height: 1.2em; background-color: currentColor; -webkit-mask-size: contain; mask-size: contain; -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat; -webkit-mask-position: center; mask-position: center; }
.icon.arrow-right { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12h14m-7-7l7 7-7 7'/%3E%3C/svg%3E"); }
.icon.logout { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 21H5a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h4m7 14l5-5-5-5m-7 5h12'/%3E%3C/svg%3E"); }
.icon.check { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E"); }
.icon.book { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 19.5A2.5 2.5 0 0 1 6.5 17H20v2H6.5a2.5 2.5 0 0 1 0-5H20V9H6.5a2.5 2.5 0 0 1 0-5H20V2H6.5A2.5 2.5 0 0 1 4 4.5v15z'/%3E%3C/svg%3E"); }
.icon.chart { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 20V10m6 10V4M6 20v-4'/%3E%3C/svg%3E"); }
.icon.chevron-right { -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='9 18 15 12 9 6'%3E%3C/polyline%3E%3C/svg%3E"); }

.loading-spinner, .welcome-section { position: fixed; top: 0; left: 0; width: 100%; height: 100%; display: flex; flex-direction: column; justify-content: center; align-items: center; background-color: var(--bg-primary); z-index: 100; transition: opacity var(--transition-medium), visibility var(--transition-medium); }
.spinner { border: 4px solid var(--bg-tertiary); border-top-color: var(--primary-color); border-radius: 50%; width: 40px; height: 40px; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.welcome-section { z-index: 150; opacity: 0; visibility: hidden; }
.welcome-message { font-size: clamp(1.5rem, 5vw, 2.5rem); font-weight: 700; }

.login-card { background: var(--bg-secondary); border-radius: var(--radius-l); padding: clamp(1.5rem, 5vw, 2.5rem); box-shadow: var(--shadow-soft); margin-top: 5vh; }
.login-header { text-align: center; margin-bottom: 2rem; }
.card-title { font-size: clamp(1.8rem, 5vw, 2.2rem); margin: 0; }
.card-subtitle { color: var(--text-secondary); margin: 0.5rem 0 0; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 0.5rem; display: block; }
input[type="text"], input[type="password"] { width: 100%; padding: 0.9rem 1rem; border: 1px solid var(--border-color); border-radius: var(--radius-m); font-size: 1rem; background-color: var(--bg-primary); transition: border-color var(--transition-fast), box-shadow var(--transition-fast); -webkit-appearance: none; box-sizing: border-box; }
input[type="text"]:focus, input[type="password"]:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(10, 132, 255, 0.1); }
.form-actions { display: flex; justify-content: space-between; align-items: center; margin-top: 2rem; }
.checkbox-group { display: flex; align-items: center; gap: 0.5rem; color: var(--text-secondary); cursor: pointer; }
.btn-primary { background-color: var(--primary-color); color: var(--text-on-primary); padding: 0.8rem 1.2rem; border-radius: var(--radius-m); font-size: 1rem; font-weight: 500; border: none; cursor: pointer; display: flex; align-items: center; gap: 0.5rem; transition: transform var(--transition-fast), box-shadow var(--transition-fast); }
#loginMessage { margin-top: 1.5rem; padding: 0.8rem 1rem; border-radius: var(--radius-s); font-weight: 500; text-align: center; opacity: 0; max-height: 0; overflow: hidden; transition: all var(--transition-medium); }
#loginMessage.error { background-color: rgba(255, 69, 58, 0.1); color: var(--danger-color); }

.grades-display-section { display: none; opacity: 0; width: 100%; transition: opacity 0.6s; }
.user-profile-header { display: flex; align-items: center; gap: 1rem; padding: 1rem; background-color: var(--bg-secondary); border-radius: var(--radius-l); box-shadow: var(--shadow-soft); margin-bottom: 1.5rem; }
.avatar { width: 48px; height: 48px; border-radius: 50%; background-color: var(--primary-color); color: var(--text-on-primary); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; font-weight: 700; flex-shrink: 0; }
.user-info { flex-grow: 1; }
.user-name { font-weight: 700; font-size: 1.2rem; }
.user-id { font-size: 0.9rem; color: var(--text-secondary); }
.btn-logout { background: none; border: none; cursor: pointer; padding: 0.5rem; color: var(--text-secondary); border-radius: 50%; transition: background-color var(--transition-fast), color var(--transition-fast); }
.btn-logout:hover { background-color: var(--bg-tertiary); color: var(--text-primary); }

.summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1rem; }
.stat-card { background-color: var(--bg-secondary); border-radius: var(--radius-l); padding: 1rem; box-shadow: var(--shadow-soft); }
.stat-header { display: flex; align-items: center; gap: 0.75rem; }
.stat-icon-wrapper { width: 32px; height: 32px; border-radius: var(--radius-s); display: flex; align-items: center; justify-content: center; color: var(--text-on-primary); font-size: 1rem; flex-shrink: 0; }
.stat-icon-wrapper.pass { background-color: var(--accent-color); }
.stat-icon-wrapper.taken { background-color: var(--info-color); }
.stat-icon-wrapper.gpa { background-color: var(--warning-color); }
.stat-label { font-size: 0.9rem; color: var(--text-secondary); font-weight: 500; }
/* [FINAL POLISH] Refined font weight for numbers */
.stat-value { font-size: clamp(1.8rem, 5vw, 2.2rem); font-weight: 600; margin-top: 0.5rem; }

/* [FINAL POLISH] Added breathing room */
.grades-list-container { display: flex; flex-direction: column; gap: 1rem; margin-top: 2.5rem; }
.term-card { background-color: var(--bg-secondary); border-radius: var(--radius-l); box-shadow: var(--shadow-soft); overflow: hidden; transition: box-shadow var(--transition-fast); opacity: 0; transform: translateY(20px); animation: slide-up 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards; }
@keyframes slide-up { to { opacity: 1; transform: translateY(0); } }
.term-card.is-current { background-color: var(--bg-current-term); }
.term-header { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.25rem; cursor: pointer; }
.term-header-info { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; flex-grow: 1; }
.term-tag { background-color: var(--primary-color); color: var(--text-on-primary); font-size: 0.8rem; font-weight: 700; padding: 0.25rem 0.6rem; border-radius: var(--radius-s); white-space: nowrap; }
.term-tag.current { background-color: var(--accent-color); }
.term-name { font-size: 1rem; font-weight: 500; }
/* [FINAL POLISH] Interactive chevron */
.term-chevron-wrapper { display: flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: 50%; transition: background-color var(--transition-fast), transform var(--transition-fast); }
.term-header:hover .term-chevron-wrapper { background-color: var(--bg-tertiary); }
.term-chevron-wrapper .icon.chevron-right { color: var(--text-tertiary); transition: transform var(--transition-medium); }
.term-card.is-expanded .term-chevron-wrapper .icon.chevron-right { transform: rotate(90deg); }

.term-content { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--transition-medium); }
.term-card.is-expanded .term-content { grid-template-rows: 1fr; }
.term-content > .grades-list { overflow: hidden; }
.grades-list { display: flex; flex-direction: column; gap: 0.75rem; padding: 0 1.25rem; }
.term-card.is-expanded .grades-list { padding-bottom: 1rem; }

.grade-item { border: 1px solid var(--border-color); border-radius: var(--radius-m); padding: 1rem; cursor: pointer; transition: all var(--transition-fast); }
.grade-item:hover { border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(10, 132, 255, 0.1); }
.card-main { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.course-name { font-weight: 500; }
.course-details-inline { font-size: 0.85rem; color: var(--text-secondary); margin-top: 0.25rem; }
.score-value { font-size: 1.5rem; font-weight: 700; white-space: nowrap; }
.grade-item.passed .score-value { color: var(--accent-color); }
.grade-item.failed .score-value { color: var(--danger-color); }
.grade-item.not-announced .score-value { color: var(--text-tertiary); font-size: 1rem; font-weight: 500; }
.card-details-extra { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--transition-medium); }
.grade-item.expanded .card-details-extra { grid-template-rows: 1fr; }
.card-details-extra > div { overflow: hidden; padding-top: 1rem; }
.detail-row { display: flex; justify-content: space-between; padding: 0.25rem 0; font-size: 0.9rem; }
.detail-label { color: var(--text-secondary); }
.detail-value { font-weight: 500; }

.app-footer { text-align: center; padding: 2rem 1rem 1rem; font-size: 0.8rem; color: var(--text-tertiary); line-height: 1.5; }
.animate-enter { opacity: 1 !important; visibility: visible !important; }
.animate-exit { opacity: 0 !important; visibility: hidden !important; }