/* ═══════════════════════════════════════════════
   PROTRACK — LIGHT THEME
   Colors: White · Blue · Green · Orange
═══════════════════════════════════════════════ */

:root {
  /* ── Base ── */
  --white:       #FFFFFF;
  --off-white:   #F5F7FA;
  --surface:     #FFFFFF;
  --surface2:    #F0F4FF;

  /* ── Blue ── */
  --blue:        #1565C0;
  --blue-mid:    #1976D2;
  --blue-light:  #E3F2FD;
  --blue-pale:   #EEF4FF;
  --blue-border: #BBDEFB;

  /* ── Green ── */
  --green:       #2E7D32;
  --green-mid:   #388E3C;
  --green-light: #E8F5E9;
  --green-pale:  #F1FBF2;
  --green-border:#C8E6C9;

  /* ── Orange ── */
  --orange:      #E65100;
  --orange-mid:  #F57C00;
  --orange-light:#FFF3E0;
  --orange-pale: #FFF8F1;
  --orange-border:#FFE0B2;

  /* ── Red (alerts only) ── */
  --red:         #C62828;
  --red-light:   #FFEBEE;
  --red-border:  #FFCDD2;

  /* ── Text ── */
  --text:        #1A1F36;
  --text2:       #4A5568;
  --text3:       #8A94A6;

  /* ── Borders & Shadows ── */
  --border:      #E2E8F0;
  --border2:     #CBD5E0;
  --shadow-sm:   0 1px 4px rgba(0,0,0,0.06);
  --shadow:      0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.12);

  /* ── Layout ── */
  --sidebar-w:   268px;
  --radius:      12px;
  --radius-sm:   8px;
  --radius-xs:   5px;
  --transition:  0.18s ease;
}

/* ─── RESET ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--off-white);
  color: var(--text);
  min-height: 100vh;
  overflow: hidden;
}
a { color: var(--blue); text-decoration: none; }
button { cursor: pointer; font-family: inherit; border: none; outline: none; }
input, select, textarea { font-family: inherit; }
code { font-family: 'JetBrains Mono', monospace; font-size: 0.82em; }
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }

/* ════════════════════════════════════════════
   LOGIN — SIMPLE COMBINED LAYOUT
════════════════════════════════════════════ */
.login-screen { display: none; position: fixed; inset: 0; z-index: 100; }
.login-screen.active { display: flex; }

.login-page {
  flex: 1; overflow-y: auto;
  background: linear-gradient(180deg, #C8E6C9 0%, #A5D6A7 50%, #81C784 100%);
  display: flex; flex-direction: column; align-items: center;
  padding: 56px 24px 40px;
}

/* Brand block — logo highlighted */
.login-brand { display: flex; flex-direction: column; align-items: center; text-align: center; margin-bottom: 28px; }
.login-logo-halo {
  width: 92px; height: 92px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(145deg, #2E7D32 0%, #43A047 55%, #A5D6A7 130%);
  padding: 4px;
  box-shadow: 0 0 0 6px rgba(46,125,50,0.10), 0 10px 28px rgba(46,125,50,0.28);
  margin-bottom: 16px;
}
.login-logo-img {
  width: 100%; height: 100%; border-radius: 50%; object-fit: cover;
  border: 3px solid var(--white);
  background: var(--white);
}
.login-logo-name { font-size: 1.7rem; font-weight: 800; color: var(--text); line-height: 1.1; }
.login-logo-name span { color: var(--blue); }
.login-logo-sub { font-size: 0.8rem; color: var(--text2); margin-top: 5px; font-weight: 500; letter-spacing: 0.02em; }

/* Light feature strip */
.login-features-row {
  display: flex; align-items: center; justify-content: center; gap: 28px;
  flex-wrap: wrap; margin-bottom: 32px;
}
.login-features-row .lf-item { display: flex; align-items: center; gap: 9px; }
.login-features-row .lf-icon { width: 30px; height: 30px; border-radius: 8px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.login-features-row .lf-title { font-size: 0.78rem; font-weight: 600; color: var(--text2); }

/* Login card — the visible focal point */
.login-card {
  width: 100%; max-width: 400px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg, 16px);
  box-shadow: 0 20px 48px rgba(15,40,80,0.12), 0 2px 8px rgba(15,40,80,0.06);
  padding: 36px 32px 28px;
}
.login-card-header { margin-bottom: 24px; text-align: center; }
.login-card-header h3 { font-size: 1.4rem; font-weight: 800; color: var(--text); }
.login-card-header p  { font-size: 0.85rem; color: var(--text2); margin-top: 4px; }

/* Role Selector */
.role-selector { display: flex; gap: 8px; margin-bottom: 24px; background: var(--off-white); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 4px; }
.role-btn {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 5px;
  padding: 9px 4px; border-radius: 6px;
  font-size: 0.78rem; font-weight: 600; color: var(--text2);
  background: transparent; transition: all var(--transition); white-space: nowrap;
}
.role-btn.active { background: var(--blue); color: white; box-shadow: 0 2px 8px rgba(21,101,192,0.25); }
.role-btn:hover:not(.active) { background: var(--border); color: var(--text); }

/* Form */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.8rem; font-weight: 700; color: var(--text2); margin-bottom: 7px; text-transform: uppercase; letter-spacing: 0.05em; }
.input-wrap { position: relative; }
.input-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text3); pointer-events: none; }
.form-input {
  width: 100%; padding: 11px 14px;
  background: var(--off-white); border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text);
  font-size: 0.9rem; font-weight: 500;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.input-wrap .form-input { padding-left: 40px; }
.form-input:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(21,101,192,0.12); background: var(--white); }
.form-input::placeholder { color: var(--text3); font-weight: 400; }
select.form-input {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%238A94A6' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center; padding-right: 34px;
}

.login-error { min-height: 20px; font-size: 0.82rem; color: var(--red); margin-bottom: 10px; font-weight: 500; }

.btn-login {
  width: 100%; display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px; border-radius: var(--radius-sm);
  background: var(--blue); color: white;
  font-size: 0.92rem; font-weight: 700;
  transition: all var(--transition); margin-bottom: 20px;
}
.btn-login:hover { background: var(--blue-mid); box-shadow: 0 4px 16px rgba(21,101,192,0.3); transform: translateY(-1px); }

.login-hint { border-top: 1px solid var(--border); padding-top: 16px; display: flex; flex-direction: column; gap: 8px; }
.register-link { text-align: center; margin-top: 14px; font-size: 0.82rem; color: var(--text2); }
.register-link a { font-weight: 700; }
.hint-row { display: flex; align-items: center; gap: 10px; font-size: 0.8rem; }
.hint-role { background: var(--blue-light); color: var(--blue); font-weight: 700; font-size: 0.72rem; padding: 2px 8px; border-radius: 20px; text-transform: uppercase; letter-spacing: 0.05em; }
.hint-row code { background: var(--off-white); border: 1px solid var(--border); padding: 2px 8px; border-radius: var(--radius-xs); color: var(--text2); }

/* ════════════════════════════════════════════
   APP LAYOUT
════════════════════════════════════════════ */
.app-screen { display: none; height: 100vh; overflow: hidden; }
.app-screen.active { display: flex; }

/* ── SIDEBAR ── */
.sidebar {
  width: var(--sidebar-w); flex-shrink: 0;
  background: var(--blue); /* rich blue sidebar */
  display: flex; flex-direction: column; height: 100vh; overflow: hidden;
  transition: width var(--transition), transform var(--transition);
  position: relative; z-index: 10;
  box-shadow: 2px 0 12px rgba(21,101,192,0.15);
}

.sidebar-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 16px; border-bottom: 1px solid rgba(255,255,255,0.12); flex-shrink: 0;
}
.sidebar-brand { display: flex; align-items: center; gap: 10px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-name { font-size: 0.82rem; font-weight: 800; color: rgba(255,255,255,0.7); text-transform: uppercase; letter-spacing: 0.08em; }
.brand-sub  { font-size: 0.95rem; font-weight: 800; color: white; }
.sidebar-toggle { background: rgba(255,255,255,0.1); color: white; padding: 6px; border-radius: 6px; transition: background var(--transition); }
.sidebar-toggle:hover { background: rgba(255,255,255,0.2); }

.sidebar-user {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 16px; border-bottom: 1px solid rgba(255,255,255,0.1); flex-shrink: 0;
}
.user-avatar {
  width: 38px; height: 38px; border-radius: 50%;
  background: linear-gradient(135deg, var(--orange), #FF8F00);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 0.95rem; color: white; flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.user-avatar.sm { width: 32px; height: 32px; font-size: 0.8rem; }
/* In top-bar, avatar is orange */
.top-bar .user-avatar { background: linear-gradient(135deg, var(--orange), #FF8F00); }
.user-name { font-size: 0.88rem; font-weight: 700; color: white; }
.user-role { font-size: 0.73rem; color: rgba(255,255,255,0.6); margin-top: 1px; }
.user-info { overflow: hidden; }
.user-name, .user-role { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.sidebar-nav { flex: 1; overflow-y: auto; padding: 12px 10px; }
.nav-section { margin-bottom: 6px; }
.nav-section-label {
  font-size: 0.65rem; font-weight: 800; letter-spacing: 0.12em;
  text-transform: uppercase; color: rgba(255,255,255,0.45);
  padding: 10px 10px 5px;
}
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: 8px;
  font-size: 0.85rem; font-weight: 600; color: rgba(255,255,255,0.72);
  cursor: pointer; transition: all var(--transition); margin-bottom: 2px;
}
.nav-item:hover { background: rgba(255,255,255,0.1); color: white; }
.nav-item.active { background: rgba(255,255,255,0.18); color: white; }
.nav-item.active svg { stroke: #FFB74D; }
.nav-badge { margin-left: auto; background: var(--orange); color: white; font-size: 0.68rem; font-weight: 800; padding: 1px 7px; border-radius: 20px; }

.sidebar-footer { padding: 12px 10px; border-top: 1px solid rgba(255,255,255,0.1); flex-shrink: 0; }
.btn-logout {
  width: 100%; display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: 8px;
  font-size: 0.85rem; font-weight: 600; color: rgba(255,255,255,0.6); background: none;
  transition: all var(--transition);
}
.btn-logout:hover { background: rgba(198,40,40,0.15); color: #EF9A9A; }

/* ── MAIN CONTENT ── */
.main-content { flex: 1; display: flex; flex-direction: column; overflow: hidden; background: var(--off-white); }

.top-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px; height: 62px;
  background: var(--white); border-bottom: 1px solid var(--border);
  flex-shrink: 0; box-shadow: var(--shadow-sm);
}
.top-bar-left { display: flex; align-items: center; gap: 14px; }
.mobile-toggle { display: none; background: none; color: var(--text2); padding: 4px; }
.page-title { font-size: 1.15rem; font-weight: 800; color: var(--text); }
.top-bar-right { display: flex; align-items: center; gap: 14px; }
.top-user { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; font-weight: 600; color: var(--text); }

.notif-btn {
  position: relative; width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: var(--off-white); border: 1px solid var(--border); border-radius: 50%;
  color: var(--text2); cursor: pointer; transition: all var(--transition);
}
.notif-btn:hover { border-color: var(--blue-border); color: var(--blue); }
.notif-badge {
  position: absolute; top: -3px; right: -3px;
  background: var(--orange); color: white;
  font-size: 0.62rem; font-weight: 800;
  min-width: 16px; height: 16px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center; padding: 0 3px;
}
.notif-dropdown {
  display: none; position: absolute; top: 64px; right: 16px;
  width: 340px; background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-lg); z-index: 200; overflow: hidden;
}
.notif-dropdown.open { display: block; }
.notif-header { padding: 14px 16px; border-bottom: 1px solid var(--border); font-size: 0.85rem; font-weight: 800; color: var(--text); }
.notif-item { padding: 12px 16px; border-bottom: 1px solid var(--border); font-size: 0.82rem; display: flex; gap: 10px; align-items: flex-start; }
.notif-item:last-child { border-bottom: none; }
.notif-dot { width: 8px; height: 8px; border-radius: 50%; margin-top: 5px; flex-shrink: 0; }
.notif-item-text { color: var(--text); font-weight: 500; line-height: 1.4; }
.notif-item-time { color: var(--text3); font-size: 0.72rem; margin-top: 3px; }

.content-area { flex: 1; overflow-y: auto; padding: 24px; }

/* ════════════════════════════════════════════
   CARDS
════════════════════════════════════════════ */
.card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
  box-shadow: var(--shadow-sm);
}
.card-header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 16px; gap: 8px; }
.card-title  { font-size: 0.95rem; font-weight: 800; color: var(--text); }
.card-subtitle { font-size: 0.78rem; color: var(--text2); margin-top: 2px; font-weight: 500; }

/* ── STAT CARDS ── */
.stat-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
  box-shadow: var(--shadow-sm); position: relative; overflow: hidden;
}
.stat-card::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; border-radius: var(--radius) var(--radius) 0 0;
}
.stat-card.blue::after   { background: var(--blue);  }
.stat-card.green::after  { background: var(--green);  }
.stat-card.orange::after { background: var(--orange); }
.stat-card.red::after    { background: var(--red);    }
.stat-card.blue   { border-top: 4px solid var(--blue);   }
.stat-card.green  { border-top: 4px solid var(--green);  }
.stat-card.orange { border-top: 4px solid var(--orange); }
.stat-card.red    { border-top: 4px solid var(--red);    }
.stat-label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text2); margin-bottom: 8px; }
.stat-value { font-size: 2.2rem; font-weight: 800; font-family: 'JetBrains Mono', monospace; line-height: 1; margin-bottom: 6px; }
.stat-value.blue   { color: var(--blue);   }
.stat-value.green  { color: var(--green);  }
.stat-value.orange { color: var(--orange); }
.stat-value.red    { color: var(--red);    }
.stat-meta { font-size: 0.78rem; color: var(--text2); font-weight: 500; }

/* ─── GRIDS ─── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* ─── BADGES ─── */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 9px; border-radius: 20px; font-size: 0.71rem; font-weight: 700; letter-spacing: 0.03em; }
.badge-blue   { background: var(--blue-light);  color: var(--blue);   border: 1px solid var(--blue-border);   }
.badge-green  { background: var(--green-light); color: var(--green);  border: 1px solid var(--green-border);  }
.badge-orange { background: var(--orange-light);color: var(--orange); border: 1px solid var(--orange-border); }
.badge-red    { background: var(--red-light);   color: var(--red);    border: 1px solid var(--red-border);    }
.badge-gray   { background: var(--off-white);   color: var(--text2);  border: 1px solid var(--border);        }

/* ─── BUTTONS ─── */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: var(--radius-sm); font-size: 0.84rem; font-weight: 700; transition: all var(--transition); cursor: pointer; border: none; }
.btn-primary   { background: var(--blue);   color: white; }
.btn-primary:hover   { background: var(--blue-mid); box-shadow: 0 3px 12px rgba(21,101,192,0.25); }
.btn-secondary { background: var(--white); color: var(--text); border: 1.5px solid var(--border2); }
.btn-secondary:hover { border-color: var(--blue); color: var(--blue); background: var(--blue-pale); }
.btn-success   { background: var(--green);  color: white; }
.btn-success:hover   { background: var(--green-mid); }
.btn-danger    { background: var(--red);    color: white; }
.btn-danger:hover    { background: #B71C1C; }
.btn-danger:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-orange    { background: var(--orange); color: white; }
.btn-orange:hover    { background: var(--orange-mid); }
.btn-sm { padding: 5px 10px; font-size: 0.78rem; }

/* ─── ALERTS ─── */
.alert { padding: 12px 14px; border-radius: var(--radius-sm); font-size: 0.84rem; display: flex; gap: 10px; align-items: flex-start; margin-bottom: 12px; line-height: 1.55; font-weight: 500; border: 1px solid; }
.alert svg { flex-shrink: 0; margin-top: 1px; }
.alert-info    { background: var(--blue-light);  border-color: var(--blue-border);   color: var(--blue);   }
.alert-success { background: var(--green-light); border-color: var(--green-border);  color: var(--green);  }
.alert-warning { background: var(--orange-light);border-color: var(--orange-border); color: var(--orange); }
.alert-danger  { background: var(--red-light);   border-color: var(--red-border);    color: var(--red);    }

/* ─── TABLE ─── */
.table-wrap { overflow-x: auto; border-radius: var(--radius-sm); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; }
thead { background: var(--off-white); }
th { padding: 11px 14px; text-align: left; font-size: 0.72rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text2); white-space: nowrap; border-bottom: 1px solid var(--border); }
td { padding: 11px 14px; font-size: 0.84rem; border-top: 1px solid var(--border); color: var(--text); font-weight: 500; }
tr:hover td { background: var(--blue-pale); }
.table-actions { display: flex; gap: 6px; align-items: center; }

/* ─── CURRICULUM MAP ─── */
.curriculum-map { display: flex; gap: 0; overflow-x: auto; padding-bottom: 16px; }
.year-block { flex-shrink: 0; min-width: 210px; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; margin-right: 0; }
.year-header { padding: 10px 14px; font-size: 0.72rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em; color: white; background: var(--blue); text-align: center; }
.sem-label { padding: 7px 14px; font-size: 0.72rem; color: var(--text2); font-weight: 700; background: var(--off-white); border-bottom: 1px solid var(--border); text-transform: uppercase; letter-spacing: 0.05em; }
.subject-node { padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 0.79rem; display: flex; align-items: center; gap: 8px; transition: background var(--transition); cursor: pointer; min-height: 52px; border-left: 4px solid transparent; background: var(--white); }
.subject-node:hover { background: var(--blue-pale); }
.subject-node.passed  { border-left-color: var(--green);  background: var(--green-pale);  }
.subject-node.failed  { border-left-color: var(--red);    background: var(--red-light);   }
.subject-node.delayed { border-left-color: var(--orange); background: var(--orange-pale); }
.subject-node.not-taken { border-left-color: var(--border2); opacity: 0.7; }
.subject-node.not-started { border-left-color: var(--border2); background: var(--white); opacity: 1; }
.subject-node.not-started .subject-title,
.subject-node.not-started .subject-code { color: var(--text2); }
.subject-code  { font-family: 'JetBrains Mono', monospace; font-size: 0.68rem; font-weight: 600; color: var(--text2); white-space: nowrap; }
.subject-title { font-size: 0.77rem; color: var(--text); line-height: 1.3; font-weight: 600; }
.subject-units { margin-left: auto; font-size: 0.7rem; color: var(--text3); flex-shrink: 0; font-weight: 600; }
.subject-grade { font-family: 'JetBrains Mono', monospace; font-size: 0.74rem; font-weight: 700; }
.year-connector { display: flex; align-items: center; padding: 0 8px; color: var(--blue); font-size: 1.5rem; align-self: stretch; padding-top: 36px; flex-shrink: 0; }

/* ─── PROGRESS BAR ─── */
.progress-bar-wrap { background: var(--off-white); border: 1px solid var(--border); border-radius: 20px; height: 10px; overflow: hidden; }
.progress-bar-fill { height: 100%; border-radius: 20px; transition: width 0.8s ease; }
.progress-bar-fill.blue   { background: linear-gradient(90deg, var(--blue-mid), var(--blue));   }
.progress-bar-fill.green  { background: linear-gradient(90deg, var(--green-mid), var(--green)); }
.progress-bar-fill.orange { background: linear-gradient(90deg, var(--orange-mid), var(--orange)); }

/* ─── TIMELINE ─── */
.timeline { display: flex; flex-direction: column; }
.timeline-item { display: flex; gap: 16px; }
.timeline-left { display: flex; flex-direction: column; align-items: center; width: 32px; flex-shrink: 0; }
.timeline-dot { width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0; margin-top: 4px; border: 2.5px solid; }
.timeline-dot.blue   { background: var(--blue);   border-color: var(--blue);   }
.timeline-dot.green  { background: var(--green);  border-color: var(--green);  }
.timeline-dot.orange { background: var(--orange); border-color: var(--orange); }
.timeline-dot.red    { background: var(--red);    border-color: var(--red);    }
.timeline-dot.gray   { background: var(--white);  border-color: var(--border2);}
.timeline-line { flex: 1; width: 2px; background: var(--border); margin: 4px 0; }
.timeline-item:last-child .timeline-line { display: none; }
.timeline-content { flex: 1; padding-bottom: 22px; }
.timeline-title { font-size: 0.88rem; font-weight: 700; margin-bottom: 4px; color: var(--text); }
.timeline-desc  { font-size: 0.8rem; color: var(--text2); line-height: 1.5; font-weight: 500; }
.timeline-date  { font-size: 0.72rem; color: var(--text3); margin-top: 4px; font-family: 'JetBrains Mono', monospace; }

/* ─── CHAIN EFFECT ─── */
.chain-container { display: flex; gap: 0; overflow-x: auto; padding: 16px 0; align-items: center; }
.chain-node { flex-shrink: 0; width: 168px; border-radius: var(--radius-sm); padding: 14px; text-align: center; border: 2px solid var(--border); background: var(--white); transition: all var(--transition); box-shadow: var(--shadow-sm); }
.chain-node.blocked { border-color: var(--red);    background: var(--red-light);    }
.chain-node.delayed { border-color: var(--orange); background: var(--orange-light); }
.chain-node.ok      { border-color: var(--green);  background: var(--green-light);  }
.chain-node.preview { border-color: var(--border2); background: var(--white); border-style: dashed; }
.chain-arrow { display: flex; align-items: center; padding: 0 6px; color: var(--text3); font-size: 1.4rem; flex-shrink: 0; }
.chain-arrow.red-arrow    { color: var(--red);    }
.chain-arrow.orange-arrow { color: var(--orange); }
.chain-node-code   { font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; font-weight: 600; color: var(--text2); margin-bottom: 4px; }
.chain-node-name   { font-size: 0.77rem; font-weight: 700; color: var(--text); line-height: 1.3; margin-bottom: 8px; }
.chain-node-status { font-size: 0.7rem; font-weight: 700; }

/* ─── SEARCH ─── */
.search-box { display: flex; align-items: center; gap: 8px; background: var(--white); border: 1.5px solid var(--border); border-radius: var(--radius-sm); padding: 8px 12px; }
.search-box input { background: none; border: none; outline: none; color: var(--text); font-size: 0.88rem; flex: 1; font-weight: 500; }
.search-box input::placeholder { color: var(--text3); }
.search-box svg { color: var(--text3); flex-shrink: 0; }
.search-box:focus-within { border-color: var(--blue); }

/* ─── CONSEQUENCE MODAL ─── */
.modal-overlay { display: none; position: fixed; inset: 0; z-index: 300; background: rgba(0,0,0,0.4); backdrop-filter: blur(4px); align-items: center; justify-content: center; padding: 24px; }
.modal-overlay.open { display: flex; }
.modal-box { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; width: 100%; max-width: 600px; max-height: 90vh; overflow-y: auto; box-shadow: var(--shadow-lg); animation: modalIn 0.22s ease; }
@keyframes modalIn { from { opacity: 0; transform: scale(0.96) translateY(8px); } to { opacity: 1; transform: none; } }
.modal-title { font-size: 1.2rem; font-weight: 800; color: var(--text); margin-bottom: 20px; }

.consequence-modal { z-index: 400; }
.consequence-box { background: var(--white); border: 2px solid var(--red); border-radius: var(--radius); width: 100%; max-width: 560px; animation: modalIn 0.22s ease; box-shadow: 0 0 40px rgba(198,40,40,0.15); }
.consequence-header { text-align: center; padding: 28px 28px 0; }
.consequence-icon { font-size: 3rem; margin-bottom: 10px; }
.consequence-header h2 { font-size: 1.5rem; font-weight: 800; color: var(--red); }
.consequence-header p { color: var(--text2); font-size: 0.88rem; margin-top: 4px; }
.consequence-body { padding: 24px 28px; }
.consequence-footer { padding: 0 28px 24px; }
.ack-label { font-size: 0.82rem; font-weight: 700; color: var(--text2); margin-bottom: 10px; }
.ack-check { display: flex; gap: 10px; align-items: flex-start; font-size: 0.84rem; color: var(--text); cursor: pointer; margin-bottom: 16px; line-height: 1.5; font-weight: 500; }
.ack-check input { margin-top: 3px; cursor: pointer; accent-color: var(--red); }
.consequence-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.consequence-item { display: flex; gap: 12px; padding: 12px; background: var(--red-light); border: 1px solid var(--red-border); border-radius: var(--radius-sm); margin-bottom: 10px; }
.consequence-item:last-child { margin-bottom: 0; }
.ci-icon { font-size: 1.3rem; flex-shrink: 0; }
.ci-text { font-size: 0.83rem; color: var(--text); line-height: 1.5; font-weight: 500; }
.ci-text strong { color: var(--red); }

/* ─── TABS ─── */
.tabs { display: flex; gap: 0; border-bottom: 2px solid var(--border); margin-bottom: 20px; }
.tab-btn { padding: 10px 18px; font-size: 0.88rem; font-weight: 700; color: var(--text2); background: none; border-bottom: 2px solid transparent; margin-bottom: -2px; transition: all var(--transition); cursor: pointer; }
.tab-btn:hover { color: var(--blue); }
.tab-btn.active { color: var(--blue); border-bottom-color: var(--blue); }

/* ─── FORM ELEMENTS ─── */
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-row.single { grid-template-columns: 1fr; }
.form-actions { display: flex; gap: 10px; margin-top: 20px; justify-content: flex-end; }

/* ─── GRADE ENTRY SPECIFIC ─── */
.row-failed td { background: #FFF5F5 !important; }
.grade-input-field { width: 100%; padding: 7px 10px; background: var(--off-white); border: 1.5px solid var(--border); border-radius: var(--radius-xs); color: var(--text); font-size: 0.82rem; font-weight: 600; font-family: 'JetBrains Mono', monospace; transition: all var(--transition); }
.grade-input-field:focus { outline: none; border-color: var(--blue); background: var(--white); box-shadow: 0 0 0 3px rgba(21,101,192,0.1); }
.grade-input-field.has-value { background: var(--blue-pale); border-color: var(--blue-border); }
.grade-input-field.is-failed { background: var(--red-light); border-color: var(--red-border); }
.grade-input-field.is-passed { background: var(--green-pale); border-color: var(--green-border); }

/* ─── EMPTY STATE ─── */
.empty-state { text-align: center; padding: 48px 24px; color: var(--text2); }
.empty-icon  { font-size: 3rem; margin-bottom: 12px; }
.empty-title { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.empty-desc  { font-size: 0.85rem; line-height: 1.5; }

/* ─── MISC UTILITIES ─── */
.gap-12 { display: flex; flex-direction: column; gap: 12px; }
.gap-16 { display: flex; flex-direction: column; gap: 16px; }
.mb-16  { margin-bottom: 16px; }
.mb-20  { margin-bottom: 20px; }
.mb-24  { margin-bottom: 24px; }
.flex         { display: flex; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-center  { display: flex; align-items: center; }
.flex-gap-8   { display: flex; gap: 8px; }
.text-sm   { font-size: 0.82rem; }
.text-xs   { font-size: 0.72rem; }
.text-muted  { color: var(--text2); }
.text-danger { color: var(--red);    }
.text-success{ color: var(--green);  }
.text-accent { color: var(--blue);   }
.text-orange { color: var(--orange); }
.mono   { font-family: 'JetBrains Mono', monospace; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fw-800 { font-weight: 800; }
.divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }
.section-title { font-size: 1rem; font-weight: 800; color: var(--text); }
.section-sub   { font-size: 0.8rem; color: var(--text2); margin-top: 3px; font-weight: 500; }

/* ─── ANIMATIONS ─── */
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.page-enter { animation: fadeUp 0.22s ease; }

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  .login-page { padding: 40px 18px 32px; }
  .login-features-row { gap: 16px; margin-bottom: 24px; }
  .login-features-row .lf-title { display: none; }
  .sidebar { position: fixed; left: 0; top: 0; bottom: 0; z-index: 50; transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .mobile-toggle { display: flex; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .content-area { padding: 16px; }
  .notif-dropdown { right: 4px; width: calc(100vw - 8px); }
}

/* ════════════════════════════════════════════
   GRADE UPLOAD PANEL (Right Slide-in)
════════════════════════════════════════════ */

/* Trigger button in sidebar */
.sidebar-upload-btn {
  margin: 0 10px 10px;
  display: flex; align-items: center; gap: 10px;
  padding: 11px 12px; border-radius: 10px;
  font-size: 0.85rem; font-weight: 700;
  background: linear-gradient(135deg, rgba(230,81,0,0.85), rgba(245,124,0,0.9));
  color: white; border: none; cursor: pointer;
  width: calc(100% - 20px);
  transition: all 0.2s ease;
  box-shadow: 0 3px 10px rgba(230,81,0,0.3);
  position: relative; overflow: hidden;
}
.sidebar-upload-btn::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0; transition: opacity 0.2s;
}
.sidebar-upload-btn:hover { transform: translateY(-1px); box-shadow: 0 5px 16px rgba(230,81,0,0.4); }
.sidebar-upload-btn:hover::before { opacity: 1; }
.sidebar-upload-btn svg { flex-shrink: 0; }
.sub-upload-badge {
  margin-left: auto; background: rgba(255,255,255,0.25);
  font-size: 0.65rem; font-weight: 800; padding: 2px 7px;
  border-radius: 20px; letter-spacing: 0.04em;
}

/* Backdrop */
.upload-panel-backdrop {
  display: none; position: fixed; inset: 0; z-index: 299;
  background: rgba(26,31,54,0.35); backdrop-filter: blur(2px);
}
.upload-panel-backdrop.open { display: block; }

/* Panel */
.upload-panel {
  position: fixed; top: 0; right: -440px; bottom: 0;
  width: 440px; z-index: 300;
  background: var(--white); border-left: 1px solid var(--border);
  box-shadow: -8px 0 32px rgba(0,0,0,0.12);
  display: flex; flex-direction: column;
  transition: right 0.32s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}
.upload-panel.open { right: 0; }

.upload-panel-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: 20px 20px 16px;
  background: linear-gradient(135deg, #0D47A1, #1565C0);
  flex-shrink: 0;
}
.upload-panel-title {
  display: flex; align-items: center; gap: 10px;
  font-size: 1rem; font-weight: 800; color: white; margin-bottom: 4px;
}
.upload-panel-sub { font-size: 0.75rem; color: rgba(255,255,255,0.65); font-weight: 500; }
.upload-panel-close {
  background: rgba(255,255,255,0.15); border: none; color: white;
  width: 30px; height: 30px; border-radius: 6px; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s; flex-shrink: 0;
}
.upload-panel-close:hover { background: rgba(255,255,255,0.25); }

.upload-panel-body { flex: 1; overflow-y: auto; padding: 20px; }

/* Upload Mode Toggle (One Subject at a Time vs All Subjects at Once) */
.upload-mode-toggle { display: flex; gap: 8px; margin-bottom: 20px; background: var(--off-white); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 4px; }
.upload-mode-btn {
  flex: 1; display: flex; align-items: center; justify-content: center; gap: 7px;
  padding: 9px; border-radius: 6px;
  font-size: 0.8rem; font-weight: 700; color: var(--text2);
  background: transparent; transition: all var(--transition);
}
.upload-mode-btn.active { background: var(--blue); color: white; box-shadow: 0 2px 8px rgba(21,101,192,0.25); }
.upload-mode-btn:hover:not(.active) { background: var(--border); color: var(--text); }

/* Steps */
.upload-step {
  display: flex; gap: 14px; margin-bottom: 24px;
  padding-bottom: 24px; border-bottom: 1px solid var(--border);
}
.upload-step:last-child { border-bottom: none; margin-bottom: 0; }
.upload-step-num {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--blue); color: white;
  font-size: 0.78rem; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 1px;
}
.upload-step-content { flex: 1; }
.upload-step-title { font-size: 0.9rem; font-weight: 800; color: var(--text); margin-bottom: 4px; }
.upload-step-desc  { font-size: 0.78rem; color: var(--text2); margin-bottom: 12px; font-weight: 500; }

/* Action Buttons */
.btn-upload-action {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 14px; border-radius: 7px;
  font-size: 0.82rem; font-weight: 700;
  cursor: pointer; border: none; transition: all 0.18s;
}
.btn-outline {
  background: var(--white); color: var(--blue);
  border: 1.5px solid var(--blue-border);
}
.btn-outline:hover { background: var(--blue-light); border-color: var(--blue); }
.btn-primary-sm {
  background: var(--blue); color: white;
}
.btn-primary-sm:hover { background: var(--blue-mid); }
.btn-success {
  background: var(--green); color: white; width: 100%;
  justify-content: center; padding: 11px;
}
.btn-success:hover { background: var(--green-mid); }
.btn-success:disabled { opacity: 0.5; cursor: not-allowed; }

/* Drop Zone */
.drop-zone {
  border: 2px dashed var(--blue-border); border-radius: 10px;
  padding: 28px 20px; text-align: center;
  background: var(--blue-pale);
  transition: all 0.2s; cursor: pointer;
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--blue); background: var(--blue-light);
  transform: scale(1.01);
}
.drop-zone-icon { color: var(--blue-mid); margin-bottom: 10px; }
.drop-zone-text { font-size: 0.88rem; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.drop-zone-sub  { font-size: 0.75rem; color: var(--text3); margin-bottom: 10px; }
.drop-zone-formats { font-size: 0.7rem; color: var(--text3); margin-top: 10px; font-family: 'JetBrains Mono', monospace; }

/* File info row */
.upload-file-info {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; background: var(--green-pale);
  border: 1px solid var(--green-border); border-radius: 8px; margin-top: 10px;
}
.ufi-icon { font-size: 1.5rem; flex-shrink: 0; }
.ufi-details { flex: 1; overflow: hidden; }
.ufi-name { font-size: 0.85rem; font-weight: 700; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ufi-size { font-size: 0.72rem; color: var(--text2); margin-top: 2px; }
.ufi-remove {
  background: none; border: none; cursor: pointer;
  font-size: 1rem; color: var(--text3); padding: 4px;
  border-radius: 4px; transition: color 0.15s;
}
.ufi-remove:hover { color: var(--red); }

/* Preview Table */
.upload-preview {
  overflow-x: auto; border-radius: 8px;
  border: 1px solid var(--border); margin-bottom: 10px;
  max-height: 220px; overflow-y: auto;
}
.upload-preview table { width: 100%; border-collapse: collapse; font-size: 0.78rem; }
.upload-preview thead { background: var(--blue-light); position: sticky; top: 0; }
.upload-preview th { padding: 8px 10px; text-align: left; font-weight: 800; color: var(--blue); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; }
.upload-preview td { padding: 7px 10px; border-top: 1px solid var(--border); }
.upload-preview tr.row-ok   td { background: transparent; }
.upload-preview tr.row-warn td { background: #FFF8F1; }
.upload-preview tr.row-err  td { background: var(--red-light); }
.preview-match  { display: inline-block; padding: 1px 7px; border-radius: 20px; font-size: 0.68rem; font-weight: 700; }
.match-ok   { background: var(--green-light); color: var(--green); }
.match-warn { background: var(--orange-light); color: var(--orange); }
.match-err  { background: var(--red-light);    color: var(--red);    }

/* Validation Summary */
.upload-validate {
  padding: 10px 14px; border-radius: 8px;
  font-size: 0.8rem; font-weight: 600; line-height: 1.5;
}
.validate-ok     { background: var(--green-light); color: var(--green);  border: 1px solid var(--green-border); }
.validate-warn   { background: var(--orange-light);color: var(--orange); border: 1px solid var(--orange-border); }
.validate-error  { background: var(--red-light);   color: var(--red);    border: 1px solid var(--red-border);   }

/* Distribution Result */
.dist-result {
  padding: 16px; border-radius: 10px; margin-top: 4px;
  border: 2px solid var(--green-border); background: var(--green-pale);
}
.dist-result-title { font-size: 0.95rem; font-weight: 800; color: var(--green); margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.dist-result-row { display: flex; justify-content: space-between; font-size: 0.8rem; padding: 5px 0; border-bottom: 1px solid var(--green-border); }
.dist-result-row:last-child { border-bottom: none; }
.dist-skipped { background: var(--orange-pale); border-color: var(--orange-border); }
.dist-skipped .dist-result-title { color: var(--orange); }

/* Format Guide */
.upload-format-guide {
  background: var(--off-white); border-radius: 10px;
  border: 1px solid var(--border); padding: 14px;
}
.ufg-title { font-size: 0.82rem; font-weight: 800; color: var(--text); margin-bottom: 10px; }
.ufg-table-wrap { overflow-x: auto; border-radius: 6px; border: 1px solid var(--border); margin-bottom: 10px; }
.ufg-table { width: 100%; border-collapse: collapse; font-size: 0.73rem; }
.ufg-table th { padding: 6px 10px; background: var(--blue-light); color: var(--blue); font-weight: 800; text-align: left; }
.ufg-table td { padding: 6px 10px; border-top: 1px solid var(--border); color: var(--text2); font-family: 'JetBrains Mono', monospace; }
.ufg-notes { font-size: 0.72rem; color: var(--text2); line-height: 1.8; font-weight: 500; }

@media (max-width: 768px) {
  .upload-panel { width: 100%; right: -100%; }
}
/* ── Student Management: curriculum → year level → section grouping ── */
.sm-curr { margin-bottom: 28px; }
.sm-curr-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 0 2px 8px; margin-bottom: 14px; border-bottom: 2px solid var(--blue); }
.sm-curr-title { font-size: 1.05rem; font-weight: 800; color: var(--blue); }
.sm-curr-meta { font-size: 0.78rem; font-weight: 600; color: var(--text2); }
.sm-group { margin-bottom: 14px; }
.sm-group-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.sm-group-count { margin-left: auto; font-size: 0.76rem; font-weight: 600; color: var(--text2); }
.sm-summary { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.sm-curr-preview { margin-bottom: 16px; }