:root{
  /* =========================
     ORANGE / TERRACOTTA (lightened)
  ========================= */
  --bg-0: #2a1209;
  --bg-1: #3b1a0f;

  --surface: rgba(255,255,255,.10);
  --surface-2: rgba(255,255,255,.14);
  --stroke: rgba(255,255,255,.18);

  --text: rgba(255,240,225,.95);
  --muted: rgba(255,220,200,.75);

  --accent: #ff7a2f;      /* orange */
  --accent-2: #c8512b;    /* terracotta */
  --accent-3: #ffb67a;    /* warm highlight */

  /* Backward-compatible vars (your old ones) */
  --primary-color: var(--accent);
  --primary-hover-color: #ff8f45;
  --secondary-color: #ffcf9b;
  --background-color: var(--bg-0);
  --text-color: var(--text);
  --header-text-color: #ffd9b2;
  --button-bg-color: var(--accent);
  --button-hover-bg-color: #ff8f45;

  /* Typography */
  --font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  --font-size-large: clamp(1.9rem, 4vw, 2.8rem);
  --font-size-medium: 1.15rem;
  --font-size-small: 0.92rem;
  --font-size-button: 0.92rem;

  /* Spacing */
  --padding-small: 8px;
  --padding-medium: 12px;
  --padding-large: 22px;

  /* Radius / shadow */
  --border-radius-small: 12px;
  --border-radius-large: 18px;
  --shadow-soft: 0 10px 30px rgba(0,0,0,.28);
  --shadow-pop: 0 18px 55px rgba(0,0,0,.42);

  --ring: 0 0 0 3px rgba(255,122,47,.28);

  --grad-accent: linear-gradient(135deg, rgba(255,122,47,.98), rgba(200,81,43,.98));
  --grad-accent-soft: linear-gradient(135deg, rgba(255,122,47,.22), rgba(200,81,43,.14));
}

/* =========================
   BASE / RESET
========================= */
*{ box-sizing:border-box; }
html, body{ height:100%; }
body{
  margin:0;
  font-family: var(--font-family);
  color: var(--text-color);

  /* brighter + warmer background than previous */
  background:
    radial-gradient(900px 600px at 20% 10%, rgba(255,120,40,.25), transparent 60%),
    radial-gradient(700px 500px at 80% 20%, rgba(255,160,90,.20), transparent 60%),
    radial-gradient(900px 650px at 50% 95%, rgba(255,182,122,.12), transparent 60%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1));
}

a{ color:inherit; }
img{ display:block; max-width:100%; }

::selection{
  background: rgba(255,122,47,.35);
  color: var(--text);
}

/* very subtle grain (optional) */
body:before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  background-image: radial-gradient(rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 3px 3px;
  opacity:.18;
  mix-blend-mode: overlay;
}

/* =========================
   COMMON LAYOUT
========================= */
.page{
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(16px, 3vw, 28px);
}

/* Your pages mostly use .container, so make it the main wrapper */
.container{
  display:flex;
  flex-wrap:wrap;
  gap: 18px;
  justify-content:center;
  max-width: 1200px;
  padding: 40px var(--padding-large) var(--padding-large);
  margin: 0 auto;
}

/* Some pages have header inside container and need full width */
header{
  width:100%;
  text-align:center;
  margin: 0 0 18px;
}

header h1{
  margin: 0;
  font-size: var(--font-size-large);
  letter-spacing: .2px;
  color: var(--header-text-color);
  text-shadow: 0 10px 28px rgba(0,0,0,.35);
}

/* underline accent under main title */
header h1:after{
  content:"";
  display:block;
  width: min(240px, 72%);
  height: 3px;
  margin: 12px auto 0;
  border-radius: 999px;
  background: var(--grad-accent);
  box-shadow: 0 10px 22px rgba(255,122,47,.18);
}

/* =========================
   TILES / LINKS (class-link)
========================= */
.class-link{
  position:relative;
  width: 320px;
  padding: 14px 16px;
  text-decoration:none;
  text-align:center;

  color: var(--text);
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--border-radius-large);
  box-shadow: var(--shadow-soft);

  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);

  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, background .18s ease;
  cursor:pointer;
  user-select:none;
}

.class-link:before{
  content:"";
  position:absolute;
  inset:-2px;
  background: var(--grad-accent-soft);
  opacity:.95;
  transform: translate3d(-18%, -18%, 0) rotate(8deg);
  filter: blur(18px);
  pointer-events:none;
  transition: opacity .18s ease, transform .18s ease;
}

.class-link:after{
  content:"";
  position:absolute;
  top:-60px;
  right:-60px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(255,182,122,.55), rgba(255,122,47,.18), transparent 65%);
  opacity:.55;
  pointer-events:none;
  transition: transform .18s ease, opacity .18s ease;
}

.class-link:hover{
  transform: translateY(-6px);
  box-shadow: var(--shadow-pop);
  border-color: rgba(255,122,47,.45);
  background: rgba(255,255,255,.17);
}
.class-link:hover:before{
  opacity:1;
  transform: translate3d(-10%, -10%, 0) rotate(8deg);
}
.class-link:hover:after{
  transform: scale(1.06);
  opacity:.7;
}

.class-link:focus{
  outline:none;
  box-shadow: var(--shadow-soft), var(--ring);
}

/* =========================
   STUDENTS GRID / CARD
========================= */
.students-container{
  display:flex;
  flex-wrap:wrap;
  gap: 18px;
  justify-content:center;
  width:100%;
}

.student-card{
  width: 320px;
  background: rgba(255,255,255,.13);
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 18px;
  box-shadow: var(--shadow-soft);
  overflow:hidden;
  cursor:pointer;

  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.student-card:hover{
  transform: translateY(-6px);
  box-shadow: var(--shadow-pop);
  border-color: rgba(255,122,47,.45);
}

.student-card img{
  width:100%;
  height: 210px;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.02);
  mask-image: linear-gradient(180deg, #000 78%, transparent 100%);
}

.student-card h2{
  margin: 14px 16px 6px;
  font-size: 1.35rem;
  color: var(--text);
  letter-spacing:.2px;
}

.student-card p{
  margin: 0 16px 14px;
  color: var(--muted);
  font-size: 0.98rem;
}

.student-card ul{
  list-style:none;
  padding: 0 16px 16px;
  margin: 0;
  display:flex;
  flex-direction:column;
  gap: 10px;
}

.student-card ul li{ margin:0; }

.student-card ul li a{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  text-decoration:none;
  color: rgba(255, 210, 170, .92);
  border-bottom: 1px dashed rgba(255, 210, 170, .35);
  padding-bottom: 2px;
  transition: color .16s ease, border-color .16s ease;
}

.student-card ul li a:hover{
  color: var(--accent-3);
  border-color: rgba(255,182,122,.8);
}

/* =========================
   MODAL
========================= */
.modal{
  font-family: var(--font-family);
  display:none;
  position:fixed;
  z-index:999;
  inset:0;
  background: rgba(0,0,0,.58);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-content{
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,122,47,.28);
  margin: 8vh auto;
  padding: 18px 18px 16px;
  width: min(680px, 92vw);
  box-shadow: var(--shadow-pop);
  border-radius: 18px;
  position:relative;
  color: var(--text);
}

.modal-content:before{
  content:"";
  position:absolute;
  inset:-2px;
  border-radius: 20px;
  background: var(--grad-accent-soft);
  filter: blur(16px);
  opacity:.85;
  pointer-events:none;
  z-index:-1;
}

.modal-content p{
  margin: 10px 0;
  color: var(--muted);
}

.modal-content a{
  color: var(--accent-3);
  text-decoration:none;
  border-bottom: 1px solid rgba(255,182,122,.35);
}
.modal-content a:hover{
  border-bottom-color: rgba(255,182,122,.8);
}

.close{
  color: rgba(255,255,255,.70);
  position:absolute;
  right: 14px;
  top: 10px;
  font-size: 30px;
  font-weight: 700;
  user-select:none;
  transition: color .16s ease, transform .16s ease;
}
.close:hover,
.close:focus{
  color: rgba(255,255,255,.95);
  cursor:pointer;
  transform: scale(1.05);
}

/* =========================
   BUTTONS (global)
========================= */
button,
.button{
  appearance:none;
  border:none;
  padding: 10px 14px;
  font-size: var(--font-size-button);
  color: #1a0f0a;
  background: var(--grad-accent);
  border-radius: 14px;
  cursor:pointer;
  margin-top: var(--padding-small);
  box-shadow: 0 12px 26px rgba(255,122,47,.18);
  transition: transform .08s ease, filter .16s ease, box-shadow .16s ease;
}

button:hover,
.button:hover{
  filter: brightness(1.06) saturate(1.05);
  box-shadow: 0 16px 34px rgba(255,122,47,.22);
}

button:active,
.button:active{
  transform: scale(.98);
}

button:focus,
.button:focus{
  outline:none;
  box-shadow: 0 12px 26px rgba(255,122,47,.18), var(--ring);
}

/* neutral back button */
.back-btn{
  background: rgba(255,255,255,.12);
  color: var(--text);
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 14px;
  box-shadow: var(--shadow-soft);
}

.back-btn:hover{
  border-color: rgba(255,122,47,.35);
}

/* special save button (optional) */
.save-btn{
  color:#1a0f0a;
  background: linear-gradient(135deg, #ffb67a, #ff7a2f, #c8512b);
}
.save-btn:hover{
  filter: brightness(1.06) saturate(1.05);
}

/* =========================
   JSON OUTPUT (add_student.html)
========================= */
#clearJson, #backToMain{
  margin-top: var(--padding-small);
}

#jsonOutput{
  margin-top: 10px;
  padding: 12px;
  background: rgba(0,0,0,.18);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 14px;
  font-size: var(--font-size-small);
  color: rgba(255,255,255,.86);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
}

/* =========================
   FORMS (add_person.html, edit_person.html)
========================= */
.form-container{
  width: min(900px, 95vw);
  margin: 40px auto;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,122,47,.26);
  padding: 22px;
  border-radius: 18px;
  box-shadow: var(--shadow-pop);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.form-container h1{
  text-align:center;
  margin: 0 0 18px;
  color: var(--header-text-color);
  letter-spacing:.2px;
}

.form-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 14px;
}
.form-grid .full{ grid-column: 1 / -1; }

.form-container label{
  display:block;
  font-size: 13px;
  color: rgba(255,255,255,.78);
  margin: 10px 0 6px;
}

/* inputs */
.form-container input[type="text"],
.form-container input[type="number"],
.form-container input[type="email"],
.form-container input[type="tel"],
.form-container input[type="date"],
.form-container