/* ═══════════════════════════════════════════════════════════════════════════
   Summer Shine 3.0 — Main Stylesheet
   Palette: Sunflower Yellow · Coral Orange · Sky Blue · Fresh Green
   ═══════════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Abril+Fatface&family=Nunito:wght@400;600;700;800;900&family=Inter:wght@400;500;600&display=swap');

/* ─── Custom Properties ─────────────────────────────────────────────────────── */
:root {
  --yellow:     #FFD93D;
  --yellow-light: #FFF3B0;
  --yellow-dark:  #F4B400;
  --coral:      #FF6B6B;
  --coral-light: #FFE5E5;
  --coral-dark: #E53935;
  --orange:     #FF9A3C;
  --orange-light: #FFF0E0;
  --sky:        #4FC3F7;
  --sky-light:  #E1F5FE;
  --sky-dark:   #0288D1;
  --green:      #56C596;
  --green-light: #E8F8F2;
  --green-dark: #388E6B;
  --purple:     #A78BFA;
  --white:      #FFFFFF;
  --off-white:  #FFFDF5;
  --text-dark:  #1A1A2E;
  --text-mid:   #4A4A6A;
  --text-light: #7A7A9A;
  --radius-sm:  8px;
  --radius-md:  16px;
  --radius-lg:  24px;
  --radius-xl:  36px;
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.08);
  --shadow-md:  0 8px 24px rgba(0,0,0,0.10);
  --shadow-lg:  0 16px 48px rgba(0,0,0,0.14);
  --transition: 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--off-white);
  color: var(--text-dark);
  overflow-x: hidden;
  line-height: 1.6;
}

h1, h2, h3, h4 {
  font-family: 'Nunito', system-ui, sans-serif;
  line-height: 1.2;
}

img { max-width: 100%; }

a { color: inherit; text-decoration: none; }

/* ─── Scrollbar ─────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--yellow-light); }
::-webkit-scrollbar-thumb { background: var(--orange); border-radius: 8px; }

/* ═══════════════════════════════════════════════════════════════════════════
   HEADER / NAV
   ═══════════════════════════════════════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: rgba(255, 253, 245, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--yellow-light);
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-logo {
  font-family: 'Nunito', sans-serif;
  font-weight: 900;
  font-size: 1.3rem;
  color: var(--text-dark);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ── Brand Text Title ── */
.brand-text {
  font-family: 'Nunito', sans-serif;
  font-weight: 900;
  font-size: 1.15rem;
  color: var(--text-dark);
  letter-spacing: -0.3px;
}

.brand-fun {
  background: linear-gradient(135deg, var(--orange) 0%, var(--coral) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-cta {
  background: linear-gradient(135deg, var(--yellow), var(--orange));
  color: var(--text-dark);
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 0.9rem;
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius-xl);
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow 0.2s;
  box-shadow: 0 4px 12px rgba(255, 154, 60, 0.4);
}

.header-cta:hover {
  transform: scale(1.06) translateY(-1px);
  box-shadow: 0 6px 18px rgba(255, 154, 60, 0.5);
}

/* ═══════════════════════════════════════════════════════════════════════════
   HERO SECTION
   ═══════════════════════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 7rem 1.5rem 4rem;
  overflow: hidden;
  background: linear-gradient(160deg, #FFF8DC 0%, #FFF3CD 30%, #E1F5FE 70%, #E8F8F2 100%);
}

/* Sun rays background */
.hero::before {
  content: '';
  position: absolute;
  top: -120px; left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 700px;
  background: conic-gradient(
    from 0deg,
    transparent 0deg, rgba(255, 217, 61, 0.18) 10deg,
    transparent 20deg, rgba(255, 217, 61, 0.18) 30deg,
    transparent 40deg, rgba(255, 217, 61, 0.18) 50deg,
    transparent 60deg, rgba(255, 217, 61, 0.18) 70deg,
    transparent 80deg, rgba(255, 217, 61, 0.18) 90deg,
    transparent 100deg, rgba(255, 217, 61, 0.18) 110deg,
    transparent 120deg, rgba(255, 217, 61, 0.18) 130deg,
    transparent 140deg, rgba(255, 217, 61, 0.18) 150deg,
    transparent 160deg, rgba(255, 217, 61, 0.18) 170deg,
    transparent 180deg, rgba(255, 217, 61, 0.18) 190deg,
    transparent 200deg, rgba(255, 217, 61, 0.18) 210deg,
    transparent 220deg, rgba(255, 217, 61, 0.18) 230deg,
    transparent 240deg, rgba(255, 217, 61, 0.18) 250deg,
    transparent 260deg, rgba(255, 217, 61, 0.18) 270deg,
    transparent 280deg, rgba(255, 217, 61, 0.18) 290deg,
    transparent 300deg, rgba(255, 217, 61, 0.18) 310deg,
    transparent 320deg, rgba(255, 217, 61, 0.18) 330deg,
    transparent 340deg, rgba(255, 217, 61, 0.18) 350deg,
    transparent 360deg
  );
  border-radius: 50%;
  animation: rotateSun 40s linear infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes rotateSun {
  from { transform: translateX(-50%) rotate(0deg); }
  to   { transform: translateX(-50%) rotate(360deg); }
}

/* Blob shapes */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
  animation: blobFloat 8s ease-in-out infinite alternate;
}

.blob-1 {
  width: 400px; height: 400px;
  background: var(--yellow);
  top: -80px; left: -100px;
  animation-delay: 0s;
}

.blob-2 {
  width: 300px; height: 300px;
  background: var(--coral);
  bottom: 80px; right: -60px;
  animation-delay: -3s;
}

.blob-3 {
  width: 250px; height: 250px;
  background: var(--sky);
  bottom: 40px; left: -40px;
  animation-delay: -5s;
}

.blob-4 {
  width: 200px; height: 200px;
  background: var(--green);
  top: 100px; right: 100px;
  animation-delay: -2s;
}

@keyframes blobFloat {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(20px, 20px) scale(1.05); }
}

/* Floating confetti dots */
.confetti-bg span {
  position: absolute;
  border-radius: 50%;
  opacity: 0.55;
  animation: floatDot linear infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes floatDot {
  0%   { transform: translateY(100vh) rotate(0deg);   opacity: 0.5; }
  100% { transform: translateY(-20px)  rotate(360deg); opacity: 0; }
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 700px;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--white);
  border: 2px solid var(--yellow);
  border-radius: var(--radius-xl);
  padding: 0.4rem 1rem;
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-mid);
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
  animation: fadeInDown 0.6s ease both;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Hero Title — Text ── */
.hero-title {
  font-family: 'Nunito', sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  margin-bottom: 0.75rem;
  animation: fadeInUp 0.7s 0.1s ease both;
}

.hero-fun {
  font-weight: 900;
  font-size: clamp(3.5rem, 12vw, 6.5rem);
  line-height: 0.85;
  background: linear-gradient(135deg, var(--orange) 0%, var(--yellow-dark) 40%, var(--coral) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  letter-spacing: -1px;
}

.hero-camp {
  font-size: clamp(1.8rem, 6vw, 3.2rem);
  color: var(--text-dark);
  display: block;
  letter-spacing: 0.5px;
  font-weight: 800;
  line-height: 1;
  margin-top: -0.5rem;
}

.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--text-mid);
  font-weight: 500;
  margin-bottom: 2rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 0.7s 0.2s ease both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-details {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 2.25rem;
  animation: fadeInUp 0.7s 0.3s ease both;
}

.detail-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 0.6rem 1.25rem;
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-dark);
  box-shadow: var(--shadow-md);
  border: 2px solid transparent;
  transition: transform 0.2s, border-color 0.2s;
}

.detail-pill:hover {
  transform: translateY(-2px);
  border-color: var(--yellow);
}

.detail-pill .pill-icon { font-size: 1.25rem; }

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: linear-gradient(135deg, var(--coral), var(--orange));
  color: var(--white);
  font-family: 'Nunito', sans-serif;
  font-weight: 900;
  font-size: 1.2rem;
  padding: 1rem 2.5rem;
  border-radius: var(--radius-xl);
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(255, 107, 107, 0.45);
  transition: transform var(--transition), box-shadow 0.2s;
  text-decoration: none;
  animation: fadeInUp 0.7s 0.4s ease both;
}

.hero-cta:hover {
  transform: scale(1.06) translateY(-3px);
  box-shadow: 0 12px 32px rgba(255, 107, 107, 0.55);
}

.hero-cta .arrow { transition: transform 0.2s; }
.hero-cta:hover .arrow { transform: translateX(4px); }

/* Wave divider */
.wave-divider {
  display: block;
  width: 100%;
  overflow: hidden;
  line-height: 0;
  margin-top: -2px;
}
.wave-divider svg { display: block; }

/* ═══════════════════════════════════════════════════════════════════════════
   ACTIVITIES SECTION
   ═══════════════════════════════════════════════════════════════════════════ */
.activities-section {
  padding: 5rem 1.5rem;
  background: var(--white);
}

.section-label {
  display: inline-block;
  background: var(--yellow-light);
  color: var(--orange);
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-xl);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 900;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-mid);
  max-width: 580px;
  margin-bottom: 3rem;
}

.activities-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem;
  max-width: 960px;
  margin: 0 auto;
}

.activity-card {
  flex: 0 1 210px;
  min-width: 180px;
  background: var(--off-white);
  border-radius: var(--radius-lg);
  padding: 2rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: default;
}

.activity-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}

.activity-card:nth-child(1) { --card-color: var(--green);  }
.activity-card:nth-child(2) { --card-color: var(--coral);  }
.activity-card:nth-child(3) { --card-color: var(--purple); }
.activity-card:nth-child(4) { --card-color: var(--sky);    }
.activity-card:nth-child(5) { --card-color: var(--orange); }
.activity-card:nth-child(6) { --card-color: var(--yellow-dark); }
.activity-card:nth-child(7) { --card-color: var(--coral);  }
.activity-card:nth-child(8) { --card-color: var(--sky-dark); }

.activity-card:hover {
  border-color: var(--card-color);
  background: var(--white);
}

.activity-icon {
  margin-bottom: 0.25rem;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: transform 0.3s;
  font-size: 3.2rem;
  line-height: 1;
}

.activity-card:hover .activity-icon {
  transform: scale(1.15) rotate(-5deg);
}

.activity-label {
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-dark);
  line-height: 1.3;
}

/* ═══════════════════════════════════════════════════════════════════════════
   REGISTRATION SECTION
   ═══════════════════════════════════════════════════════════════════════════ */
.register-section {
  padding: 5rem 1.5rem;
  background: linear-gradient(160deg, #FFF8DC 0%, var(--sky-light) 100%);
  position: relative;
  overflow: hidden;
}

.register-section::before {
  content: '🌟';
  font-size: 12rem;
  position: absolute;
  top: -2rem; right: -2rem;
  opacity: 0.06;
  pointer-events: none;
}

.register-section::after {
  content: '☀️';
  font-size: 10rem;
  position: absolute;
  bottom: -1rem; left: -1rem;
  opacity: 0.06;
  pointer-events: none;
}

.form-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  max-width: 600px;
  margin: 2rem auto 0;
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--yellow-light);
  position: relative;
  z-index: 1;
}

/* ── Form Fields ── */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-dark);
  margin-bottom: 0.35rem;
}

.form-label .required-star { color: var(--coral); }

.form-microcopy {
  display: block;
  font-size: 0.8rem;
  color: var(--text-light);
  margin-bottom: 0.5rem;
}

.form-input,
.form-select {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 2.5px solid #E8E8F0;
  border-radius: var(--radius-md);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  color: var(--text-dark);
  background: var(--off-white);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
  appearance: none;
  -webkit-appearance: none;
  outline: none;
}

.form-input:focus,
.form-select:focus {
  border-color: var(--sky);
  box-shadow: 0 0 0 4px rgba(79, 195, 247, 0.15);
  transform: translateY(-1px);
  background: var(--white);
}

.form-input.valid    { border-color: var(--green); }
.form-input.invalid  { border-color: var(--coral); }
.form-select.valid   { border-color: var(--green); }
.form-select.invalid { border-color: var(--coral); }

.form-select-wrapper {
  position: relative;
}

.form-select-wrapper::after {
  content: '▾';
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
  pointer-events: none;
  font-size: 1.1rem;
}

/* Grade radio group */
.grade-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.grade-option { display: none; }

.grade-label {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 0.5rem;
  border-radius: var(--radius-md);
  border: 2.5px solid #E8E8F0;
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-mid);
  cursor: pointer;
  transition: all 0.2s;
  background: var(--off-white);
  text-align: center;
}

.grade-option:checked + .grade-label {
  background: linear-gradient(135deg, var(--sky), var(--sky-dark));
  border-color: var(--sky-dark);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(79, 195, 247, 0.4);
  transform: scale(1.04);
}

.grade-label:hover {
  border-color: var(--sky);
  background: var(--sky-light);
  color: var(--sky-dark);
}

/* Activities checkboxes */
.activities-checks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.activity-check-input { display: none; }

.activity-check-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-md);
  border: 2px solid #E8E8F0;
  font-size: 0.82rem;
  font-family: 'Nunito', sans-serif;
  font-weight: 600;
  color: var(--text-mid);
  cursor: pointer;
  transition: all 0.2s;
  background: var(--off-white);
  line-height: 1.25;
}

.activity-check-input:checked + .activity-check-label {
  background: linear-gradient(135deg, var(--green-light), #D0F5E8);
  border-color: var(--green);
  color: var(--green-dark);
}

.activity-check-label:hover {
  border-color: var(--green);
  background: var(--green-light);
}

.activity-check-label .act-icon { font-size: 1.1rem; flex-shrink: 0; }

/* Field error message */
.field-error {
  display: none;
  color: var(--coral);
  font-size: 0.82rem;
  margin-top: 0.3rem;
  font-family: 'Nunito', sans-serif;
  font-weight: 600;
  animation: shakeIn 0.3s ease;
}

@keyframes shakeIn {
  0%   { transform: translateX(-8px); }
  25%  { transform: translateX(8px); }
  50%  { transform: translateX(-4px); }
  75%  { transform: translateX(4px); }
  100% { transform: translateX(0); }
}

.field-error.show { display: block; }

/* Greeting line */
.name-greeting {
  display: none;
  background: linear-gradient(135deg, var(--yellow-light), var(--orange-light));
  border-left: 4px solid var(--orange);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 0.75rem 1rem;
  margin: -0.75rem 0 1.5rem;
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-dark);
  animation: fadeInUp 0.4s ease both;
}

.name-greeting.show { display: block; }

/* Submit button */
.submit-btn {
  width: 100%;
  padding: 1.1rem;
  background: linear-gradient(135deg, var(--coral), var(--orange));
  color: var(--white);
  font-family: 'Nunito', sans-serif;
  font-weight: 900;
  font-size: 1.15rem;
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(255, 107, 107, 0.4);
  transition: transform var(--transition), box-shadow 0.2s;
  letter-spacing: 0.3px;
  position: relative;
  overflow: hidden;
}

.submit-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(255,255,255,0.15));
  border-radius: inherit;
}

.submit-btn:hover {
  transform: scale(1.03) translateY(-2px);
  box-shadow: 0 12px 32px rgba(255, 107, 107, 0.5);
}

.submit-btn:active {
  transform: scale(0.98);
}

.submit-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* ── Confetti burst overlay ── */
#confetti-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 9999;
  display: none;
}

/* ── Success Screen ── */
#success-screen {
  display: none;
  text-align: center;
  padding: 2rem 1rem;
  animation: fadeInUp 0.5s ease both;
}

.success-icon {
  font-size: 5rem;
  display: block;
  margin-bottom: 1rem;
  animation: bounceIn 0.6s 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes bounceIn {
  from { transform: scale(0) rotate(-10deg); opacity: 0; }
  to   { transform: scale(1) rotate(0deg);   opacity: 1; }
}

.success-title {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 900;
  color: var(--text-dark);
  margin-bottom: 0.75rem;
}

.success-student-name {
  color: var(--coral);
  display: inline;
}

.success-details {
  background: linear-gradient(135deg, var(--yellow-light), var(--green-light));
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin: 1.25rem 0;
  text-align: left;
}

.success-details p {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: 'Nunito', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.success-details p:last-child { margin-bottom: 0; }

.success-hype {
  font-size: 1.05rem;
  color: var(--text-mid);
  margin: 1rem 0 1.75rem;
  line-height: 1.6;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: #25D366;
  color: white;
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 1rem;
  padding: 0.8rem 1.75rem;
  border-radius: var(--radius-xl);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  transition: transform var(--transition), box-shadow 0.2s;
  text-decoration: none;
}

.share-btn:hover {
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.5);
}

/* ═══════════════════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════════════════ */
.site-footer {
  background: var(--text-dark);
  color: rgba(255,255,255,0.7);
  text-align: center;
  padding: 2rem 1.5rem;
  font-size: 0.9rem;
}

.site-footer .footer-logo {
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.footer-brand {
  font-family: 'Nunito', sans-serif;
  font-weight: 900;
  font-size: 1.15rem;
  color: rgba(255,255,255,0.9);
}

.footer-brand .brand-fun {
  background: linear-gradient(135deg, var(--orange), var(--yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.site-footer .footer-info { margin-bottom: 0.35rem; }

.site-footer a {
  color: var(--sky-light);
  text-decoration: underline;
}

/* ═══════════════════════════════════════════════════════════════════════════
   UTILITIES
   ═══════════════════════════════════════════════════════════════════════════ */
.container {
  max-width: 1100px;
  margin: 0 auto;
}

.text-center { text-align: center; }

/* ═══════════════════════════════════════════════════════════════════════════
   RESPONSIVE — Mobile First
   ═══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 640px) {
  .grade-grid { grid-template-columns: repeat(4, 1fr); }
  .activities-checks { grid-template-columns: 1fr; }
  .form-card { padding: 1.75rem 1.25rem; }
  .activities-grid { grid-template-columns: repeat(2, 1fr); }
  .header-logo span:not(.sun-emoji) { display: none; }
}

@media (min-width: 641px) and (max-width: 900px) {
  .activities-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 901px) {
  .activities-grid { grid-template-columns: repeat(4, 1fr); }
}