/* ═══════════════════════════════════════════════════════
   KPRIET-CGPA CALCULATOR — style.css
   Dual Theme: Light (white+green) / Dark (dark+green glow)
   ═══════════════════════════════════════════════════════ */

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ══════════════════════════════════════════
   CSS VARIABLES — DARK THEME (default)
   Inspired by image 2: dark bg, blue-green logo
   ══════════════════════════════════════════ */
:root,
[data-theme="dark"] {
  /* Backgrounds */
  --bg-body:        #1a1f2e;
  --bg-deep:        #141824;
  --bg-card:        rgba(22, 28, 44, 0.85);
  --bg-input:       rgba(12, 18, 32, 0.8);
  --bg-table-head:  rgba(20, 50, 30, 0.4);
  --bg-table-even:  rgba(20, 26, 42, 0.5);
  --bg-modal:       rgba(18, 24, 38, 0.97);

  /* Brand colours — KPRIET green + blue */
  --green:          #2d8b4e;
  --green-lt:       #3db366;
  --green-dim:      rgba(45,139,78,0.18);
  --green-glow:     rgba(45,139,78,0.35);
  --blue:           #2a5fac;
  --blue-lt:        #4a88d4;
  --blue-dim:       rgba(42,95,172,0.18);
  --blue-glow:      rgba(42,95,172,0.35);

  /* Text */
  --text-primary:   #ddeae2;
  --text-sec:       #7a9e88;
  --text-muted:     rgba(122,158,136,0.45);

  /* Borders */
  --border:         rgba(45,139,78,0.22);
  --border-input:   rgba(45,139,78,0.28);
  --border-hover:   rgba(45,139,78,0.55);

  /* Shadows / glows */
  --shadow-card:    0 8px 32px rgba(0,0,0,0.45);
  --glow-green:     0 0 18px rgba(45,139,78,0.38);
  --glow-blue:      0 0 18px rgba(42,95,172,0.38);

  /* Component specifics */
  --header-bg:      rgba(20, 26, 40, 0.96);
  --ring-track:     rgba(45,139,78,0.14);
  --card-stripe:    linear-gradient(135deg, rgba(45,139,78,0.07) 0%, transparent 60%);
  --panel-top-line: linear-gradient(90deg, var(--green), var(--blue), transparent);
  --btn-add-grad:   linear-gradient(135deg, #1a5c30, #24407a);
  --btn-sub-grad:   linear-gradient(135deg, #24407a, #1a5c30);
  --btn-text-grad:  linear-gradient(90deg, #3db366, #4a88d4);
  --stat-val-grad:  linear-gradient(135deg, #3db366, #4a88d4);
  --cgpa-val-grad:  linear-gradient(135deg, #2d8b4e, #2a5fac);
  --tfoot-bg:       rgba(45,139,78,0.07);
  --empty-icon-op:  0.4;
  --scan-op:        0.04;
  --logo-bg:        rgba(255,255,255,0.08);
}

/* ══════════════════════════════════════════
   LIGHT THEME
   Inspired by image 1: white bg, green+blue logo
   ══════════════════════════════════════════ */
[data-theme="light"] {
  --bg-body:        #f4faf6;
  --bg-deep:        #eaf5ee;
  --bg-card:        rgba(255,255,255,0.88);
  --bg-input:       rgba(255,255,255,0.92);
  --bg-table-head:  rgba(45,139,78,0.07);
  --bg-table-even:  rgba(240,252,245,0.7);
  --bg-modal:       rgba(252,255,253,0.98);

  --green:          #1f7a3d;
  --green-lt:       #27a04e;
  --green-dim:      rgba(31,122,61,0.1);
  --green-glow:     rgba(31,122,61,0.2);
  --blue:           #1e4f9a;
  --blue-lt:        #2e6fc8;
  --blue-dim:       rgba(30,79,154,0.1);
  --blue-glow:      rgba(30,79,154,0.2);

  --text-primary:   #12301e;
  --text-sec:       #3a6b4a;
  --text-muted:     rgba(58,107,74,0.5);

  --border:         rgba(31,122,61,0.18);
  --border-input:   rgba(31,122,61,0.3);
  --border-hover:   rgba(31,122,61,0.5);

  --shadow-card:    0 4px 20px rgba(31,122,61,0.1), 0 1px 4px rgba(0,0,0,0.06);
  --glow-green:     0 0 14px rgba(31,122,61,0.22);
  --glow-blue:      0 0 14px rgba(30,79,154,0.2);

  --header-bg:      rgba(244,250,246,0.96);
  --ring-track:     rgba(31,122,61,0.12);
  --card-stripe:    linear-gradient(135deg, rgba(31,122,61,0.05) 0%, transparent 60%);
  --panel-top-line: linear-gradient(90deg, var(--green), var(--blue), transparent);
  --btn-add-grad:   linear-gradient(135deg, #1f7a3d, #1e4f9a);
  --btn-sub-grad:   linear-gradient(135deg, #1e4f9a, #1f7a3d);
  --btn-text-grad:  linear-gradient(90deg, #ffffff, #e8f4ff);
  --stat-val-grad:  linear-gradient(135deg, #1f7a3d, #1e4f9a);
  --cgpa-val-grad:  linear-gradient(135deg, #1f7a3d, #1e4f9a);
  --tfoot-bg:       rgba(31,122,61,0.05);
  --empty-icon-op:  0.55;
  --scan-op:        0.015;
  --logo-bg:        rgba(255,255,255,0.9);
}

/* ══════════════════════════════════════════
   GLOBAL BASE
   ══════════════════════════════════════════ */
html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Poppins', 'Segoe UI', sans-serif;
  background: var(--bg-body);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background 0.4s ease, color 0.35s ease;
}

/* ── THREE.JS CANVAS ── */
#bg-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
[data-theme="dark"]  #bg-canvas { opacity: 0.6; }
[data-theme="light"] #bg-canvas { opacity: 0.15; }

/* ── SCANLINES ── */
.scanlines {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg, transparent, transparent 3px,
    rgba(0,0,0,var(--scan-op)) 3px, rgba(0,0,0,var(--scan-op)) 6px
  );
}

/* ── APP WRAPPER ── */
.app-wrapper {
  position: relative;
  z-index: 10;
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px 64px;
}

/* ══════════════════════════════════════════
   CONTACT MODAL
   ══════════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}
.modal-card {
  background: var(--bg-modal);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 36px 36px;
  max-width: 440px;
  width: 100%;
  position: relative;
  box-shadow: var(--shadow-card), var(--glow-green);
  text-align: center;
  transform: translateY(24px) scale(0.96);
  transition: transform 0.35s cubic-bezier(0.23,1,0.32,1);
}
.modal-overlay.open .modal-card {
  transform: translateY(0) scale(1);
}
.modal-close {
  position: absolute;
  top: 14px; right: 14px;
  width: 30px; height: 30px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-sec);
  cursor: pointer;
  font-size: 0.75rem;
  line-height: 1;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.modal-close:hover {
  border-color: var(--green);
  color: var(--green-lt);
  background: var(--green-dim);
}
.modal-logo-wrap { margin-bottom: 16px; }
.modal-logo-img {
  width: 72px; height: 72px;
  object-fit: contain;
  filter: drop-shadow(0 4px 12px var(--green-glow));
  animation: logoFloat 4s ease-in-out infinite;
}
@keyframes logoFloat {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}
.modal-title {
  font-family: 'Poppins', sans-serif;
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}
.modal-sub {
  font-size: 0.82rem;
  color: var(--text-sec);
  line-height: 1.65;
  margin-bottom: 26px;
}
.contact-list { display: flex; flex-direction: column; gap: 10px; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: inherit;
  text-align: left;
  transition: all 0.22s ease;
}
.contact-item:hover {
  border-color: var(--green);
  background: var(--green-dim);
  transform: translateX(5px);
  box-shadow: var(--glow-green);
}
.contact-icon { font-size: 1.35rem; flex-shrink: 0; }
.contact-label {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.contact-val {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--green-lt);
}

/* ══════════════════════════════════════════
   HEADER
   ══════════════════════════════════════════ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--header-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  padding: 14px 20px;
  transition: background 0.4s;
}
/* header inner matches app max-width */
.header-inner {
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.logo-block {
  display: flex;
  align-items: center;
  gap: 12px;
}
/* 3D-styled logo wrapper */
.logo-img-wrap {
  width: 50px; height: 50px;
  background: var(--logo-bg);
  border-radius: 12px;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  padding: 5px;
  flex-shrink: 0;
  box-shadow:
    0 4px 12px var(--green-glow),
    inset 0 1px 0 rgba(255,255,255,0.12),
    0 1px 0 rgba(0,0,0,0.25);
  transform-style: preserve-3d;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.logo-img-wrap:hover {
  transform: perspective(200px) rotateY(-6deg) rotateX(4deg) translateY(-2px);
  box-shadow: 0 8px 24px var(--green-glow), 0 2px 0 rgba(0,0,0,0.3);
}
.header-logo-img {
  width: 100%; height: 100%;
  object-fit: contain;
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.logo-title {
  font-family: 'Poppins', sans-serif;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: 0.06em;
}
.logo-sub {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--green);
  text-transform: uppercase;
  margin-top: 2px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
/* "Created by Mowshik" button */
.btn-creator {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--green-dim);
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--green-lt);
  letter-spacing: 0.06em;
  transition: all 0.25s ease;
  white-space: nowrap;
}
.btn-creator:hover {
  border-color: var(--green);
  background: rgba(45,139,78,0.15);
  box-shadow: var(--glow-green);
  transform: translateY(-1px);
}
.creator-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--green-lt);
  box-shadow: 0 0 6px var(--green-lt);
  animation: dotPulse 2s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes dotPulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.4; transform: scale(0.75); }
}
/* Theme toggle button */
.theme-toggle {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-card);
  cursor: pointer;
  font-size: 1.05rem;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.25s ease;
  flex-shrink: 0;
}
.theme-toggle:hover {
  border-color: var(--green);
  box-shadow: var(--glow-green);
  transform: scale(1.1) rotate(18deg);
}

/* ══════════════════════════════════════════
   PANEL (glassmorphism card)
   ══════════════════════════════════════════ */
.panel {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px;
  margin: 20px 0;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: background 0.4s, border-color 0.3s, box-shadow 0.3s;
  /* entrance animation */
  animation: panelIn 0.45s cubic-bezier(0.23,1,0.32,1) both;
}
/* inner gradient stripe */
.panel::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--card-stripe);
  pointer-events: none;
  border-radius: inherit;
}
/* top glow line */
.panel::after {
  content: '';
  position: absolute;
  top: 0; left: 8%; right: 8%;
  height: 1.5px;
  background: var(--panel-top-line);
  opacity: 0.5;
  pointer-events: none;
}
@keyframes panelIn {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
.input-panel   { animation-delay: 0.05s; }
.table-panel   { animation-delay: 0.12s; }
.results-panel { animation-delay: 0s; }

/* Panel header */
.panel-header  { margin-bottom: 22px; }
.panel-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.panel-icon {
  font-size: 1.05rem;
  color: var(--green);
  line-height: 1;
}
.panel-title {
  font-family: 'Poppins', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}
.panel-line {
  height: 1px;
  background: linear-gradient(90deg, var(--green) 0%, var(--blue) 50%, transparent 100%);
  opacity: 0.2;
}
.panel-actions {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.count-badge {
  margin-left: auto;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--blue-lt);
  background: var(--blue-dim);
  border: 1px solid rgba(42,95,172,0.22);
  padding: 3px 10px;
  border-radius: 100px;
}

/* ══════════════════════════════════════════
   FORM INPUTS
   ══════════════════════════════════════════ */
/* Full-width student name row */
.field-fullwidth {
  margin-bottom: 16px;
  position: relative;
}
/* Three-column row */
.input-grid {
  display: grid;
  grid-template-columns: 2fr 1.1fr 1fr;
  gap: 16px;
  margin-bottom: 22px;
}
.field-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  position: relative;
}
.field-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
}
.input-wrap, .select-wrap { position: relative; }
.field-input, .field-select {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-input);
  border-radius: 10px;
  padding: 11px 14px;
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-primary);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  transition: border-color 0.22s, box-shadow 0.22s, background 0.22s;
}
.field-input::placeholder { color: var(--text-muted); }
.field-input:focus, .field-select:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-dim), var(--glow-green);
}
/* error state */
.field-input.error, .field-select.error {
  border-color: #d04040;
  box-shadow: 0 0 0 3px rgba(208,64,64,0.12);
  animation: inputShake 0.32s ease;
}
@keyframes inputShake {
  0%,100% { transform: translateX(0); }
  25%      { transform: translateX(-5px); }
  75%      { transform: translateX(5px); }
}
/* subtle inner highlight on focus */
.input-highlight {
  position: absolute;
  inset: -1px;
  border-radius: 10px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s;
  box-shadow: 0 0 12px var(--green-glow);
}
.field-input:focus ~ .input-highlight { opacity: 1; }

/* select chevron */
.select-chevron {
  position: absolute;
  right: 13px; top: 50%;
  transform: translateY(-55%);
  color: var(--green);
  pointer-events: none;
  font-size: 1rem;
  transition: transform 0.2s;
}
.field-select:focus + .select-chevron { transform: translateY(-55%) rotate(180deg); }
.field-select option { background: var(--bg-body); color: var(--text-primary); }

/* Validation error text */
.field-error {
  font-size: 0.62rem;
  font-weight: 600;
  color: #d05050;
  letter-spacing: 0.04em;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 0.2s, max-height 0.2s;
}
.field-fullwidth.has-error .field-error,
.field-group.has-error .field-error {
  opacity: 1;
  max-height: 24px;
}

/* ══════════════════════════════════════════
   BUTTONS
   ══════════════════════════════════════════ */
.btn-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* Primary 3D button base */
.btn-primary {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 13px 20px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  overflow: hidden;
  outline: none;
  /* 3D layered shadow */
  box-shadow:
    0 4px 0 rgba(0,0,0,0.35),
    0 6px 16px rgba(0,0,0,0.25),
    inset 0 1px 0 rgba(255,255,255,0.08);
  transform: translateY(0);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.btn-add    { background: var(--btn-add-grad); }
.btn-submit { background: var(--btn-sub-grad); }

/* Gradient border ring */
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 10px;
  padding: 1px;
  background: linear-gradient(135deg, var(--green-lt), var(--blue-lt));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.6;
}

/* hover — lift effect */
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow:
    0 7px 0 rgba(0,0,0,0.3),
    0 12px 28px var(--green-glow),
    inset 0 1px 0 rgba(255,255,255,0.1);
}
/* click — press down */
.btn-primary:active {
  transform: translateY(2px);
  box-shadow:
    0 2px 0 rgba(0,0,0,0.4),
    0 3px 8px rgba(0,0,0,0.2),
    inset 0 1px 0 rgba(0,0,0,0.1);
}

/* Button label */
.btn-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: 'Poppins', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  background: var(--btn-text-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
[data-theme="light"] .btn-content {
  /* solid white text on coloured buttons in light mode */
  background: none;
  -webkit-text-fill-color: #ffffff;
  color: #ffffff;
}
.btn-icon { font-size: 1rem; }

/* Ripple */
.btn-ripple-el {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.18);
  pointer-events: none;
  transform: scale(0);
  width: 120px; height: 120px;
  margin-top: -60px; margin-left: -60px;
}
.btn-ripple-el.active { animation: rippleAnim 0.55s ease; }
@keyframes rippleAnim {
  0%   { transform: scale(0); opacity: 1; }
  100% { transform: scale(4.5); opacity: 0; }
}

/* Secondary buttons (Clear / Download) */
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 14px;
  border-radius: 8px;
  border: 1px solid;
  background: transparent;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  transition: all 0.22s ease;
}
.btn-clear    { border-color: rgba(190,50,50,0.3); color: #c06060; }
.btn-clear:hover {
  border-color: #c04040;
  background: rgba(200,60,60,0.08);
  transform: translateY(-1px);
}
.btn-download { border-color: var(--border); color: var(--blue-lt); }
.btn-download:hover {
  border-color: var(--blue);
  background: var(--blue-dim);
  box-shadow: var(--glow-blue);
  transform: translateY(-1px);
}

/* ══════════════════════════════════════════
   EMPTY STATE
   ══════════════════════════════════════════ */
.empty-state {
  text-align: center;
  padding: 44px 20px;
}
.empty-icon {
  font-size: 2.8rem;
  display: block;
  margin-bottom: 14px;
  opacity: var(--empty-icon-op);
  animation: bobFloat 3.5s ease-in-out infinite;
}
@keyframes bobFloat {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}
.empty-title {
  font-family: 'Poppins', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-sec);
  letter-spacing: 0.06em;
  margin-bottom: 5px;
}
.empty-sub {
  font-size: 0.76rem;
  color: var(--text-muted);
}

/* ══════════════════════════════════════════
   COURSE TABLE  (no Grade Points column)
   ══════════════════════════════════════════ */
.table-scroll-wrap {
  overflow-x: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
}
.course-table {
  width: 100%;
  border-collapse: collapse;
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
}
.course-table thead { background: var(--bg-table-head); }
.course-table th {
  padding: 11px 14px;
  text-align: left;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.course-table td {
  padding: 11px 14px;
  border-bottom: 1px solid rgba(45,139,78,0.07);
  font-weight: 400;
  color: var(--text-primary);
  vertical-align: middle;
  transition: background 0.18s;
}
.course-table tbody tr {
  transition: background 0.18s;
  animation: rowIn 0.3s ease both;
}
@keyframes rowIn {
  from { opacity: 0; transform: translateX(-14px); }
  to   { opacity: 1; transform: translateX(0); }
}
.course-table tbody tr:nth-child(even) { background: var(--bg-table-even); }
.course-table tbody tr:hover td { background: var(--green-dim); }
.course-table tbody tr:last-child td { border-bottom: none; }

td.row-num {
  font-size: 0.66rem;
  font-weight: 700;
  color: var(--text-muted);
  width: 36px;
  font-family: 'Poppins', sans-serif;
}

/* Grade pills */
.grade-pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 100px;
  font-family: 'Poppins', sans-serif;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  border: 1px solid;
}
.grade-pill.gp-10  { background:rgba(45,139,78,0.14); color:var(--green-lt);  border-color:rgba(45,139,78,0.35); }
.grade-pill.gp-9   { background:rgba(42,95,172,0.14); color:var(--blue-lt);   border-color:rgba(42,95,172,0.35); }
.grade-pill.gp-8   { background:rgba(42,95,172,0.1);  color:var(--blue-lt);   border-color:rgba(42,95,172,0.28); }
.grade-pill.gp-7   { background:rgba(90,50,180,0.12); color:#9070e0;          border-color:rgba(90,50,180,0.3);  }
.grade-pill.gp-65  { background:rgba(90,50,180,0.08); color:#b090f0;          border-color:rgba(90,50,180,0.22); }
.grade-pill.gp-6   { background:rgba(190,120,30,0.12);color:#c89040;          border-color:rgba(190,120,30,0.3); }
.grade-pill.gp-5   { background:rgba(190,60,60,0.1);  color:#c06060;          border-color:rgba(190,60,60,0.28); }

/* Delete row button */
.btn-delete {
  background: transparent;
  border: 1px solid rgba(190,60,60,0.22);
  border-radius: 6px;
  color: rgba(190,60,60,0.5);
  cursor: pointer;
  padding: 3px 8px;
  font-size: 0.68rem;
  transition: all 0.18s;
}
.btn-delete:hover {
  border-color: #c04040;
  color: #c04040;
  background: rgba(200,60,60,0.08);
}

/* Tfoot */
.tfoot-row td {
  border-top: 1px solid rgba(45,139,78,0.18) !important;
  border-bottom: none !important;
  padding: 10px 14px !important;
  background: var(--tfoot-bg) !important;
}
.tfoot-label {
  font-family: 'Poppins', sans-serif;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-sec);
}
.tfoot-val {
  font-family: 'Poppins', sans-serif;
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--blue-lt) !important;
}

/* ══════════════════════════════════════════
   RESULTS PANEL
   ══════════════════════════════════════════ */
.results-panel {
  animation: resultsReveal 0.55s cubic-bezier(0.23,1,0.32,1) both !important;
}
@keyframes resultsReveal {
  from { opacity: 0; transform: translateY(22px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0)   scale(1); }
}

.results-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 18px;
  align-items: center;
}

/* Stat cards */
.result-card {
  background: rgba(45,139,78,0.05);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 16px;
  text-align: center;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.result-card:hover {
  border-color: var(--green);
  box-shadow: var(--glow-green);
}
.result-icon { font-size: 1.8rem; margin-bottom: 10px; }
.result-value {
  font-family: 'Poppins', sans-serif;
  font-size: 2.3rem;
  font-weight: 800;
  background: var(--stat-val-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  transition: all 0.4s ease;
}
.result-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-sec);
  margin-top: 6px;
}

/* CGPA ring card */
.result-card-cgpa {
  padding: 24px 14px 18px;
  border-color: rgba(42,95,172,0.25);
}
.result-card-cgpa:hover {
  border-color: var(--blue);
  box-shadow: var(--glow-blue);
}
.cgpa-ring-wrap {
  position: relative;
  width: 128px; height: 128px;
  margin: 0 auto 10px;
}
.cgpa-ring {
  width: 100%; height: 100%;
  transform: rotate(-90deg);
}
.ring-track {
  fill: none;
  stroke: var(--ring-track);
  stroke-width: 7;
}
.ring-fill {
  fill: none;
  stroke: url(#ringGrad);
  stroke-width: 7;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.85s cubic-bezier(0.23,1,0.32,1);
  filter: drop-shadow(0 0 5px rgba(45,139,78,0.65));
}
.cgpa-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.cgpa-val {
  font-family: 'Poppins', sans-serif;
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--cgpa-val-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  transition: all 0.5s ease;
}
.cgpa-lbl {
  font-size: 0.56rem;
  letter-spacing: 0.26em;
  color: var(--text-sec);
  margin-top: 3px;
  font-weight: 700;
  text-transform: uppercase;
}
.cgpa-tag {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-sec);
  text-align: center;
  letter-spacing: 0.06em;
  min-height: 1.2em;
  transition: color 0.4s;
  padding: 0 4px;
}

/* ══════════════════════════════════════════
   TOAST NOTIFICATION
   ══════════════════════════════════════════ */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(14px);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 22px;
  font-family: 'Inter', sans-serif;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-primary);
  backdrop-filter: blur(16px);
  z-index: 9998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease, transform 0.28s ease;
  box-shadow: var(--shadow-card);
  white-space: nowrap;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toast.success { border-color: var(--green); color: var(--green-lt); }
.toast.error   { border-color: #c04040; color: #d06060; }
.toast.info    { border-color: var(--blue); color: var(--blue-lt); }

/* ══════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════ */
.site-footer {
  text-align: center;
  padding: 16px 0 0;
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ══════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════ */
@media (max-width: 680px) {
  .app-wrapper  { padding: 0 12px 48px; }
  .panel        { padding: 18px 14px; }
  .input-grid   { grid-template-columns: 1fr; gap: 12px; }
  .btn-row      { grid-template-columns: 1fr; }
  .results-grid { grid-template-columns: 1fr 1fr; }
  .result-card-cgpa { grid-column: 1 / -1; grid-row: 1; }
  .logo-title   { font-size: 0.95rem; }
  .btn-creator  { font-size: 0.66rem; padding: 7px 12px; }
  .panel-actions{ flex-wrap: wrap; }
}
@media (max-width: 400px) {
  .results-grid { grid-template-columns: 1fr; }
  .result-card-cgpa { grid-column: auto; grid-row: auto; }
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(45,139,78,0.28); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: rgba(45,139,78,0.48); }

::selection { background: rgba(45,139,78,0.2); color: var(--green-lt); }