/* Score Edu — Tutoring Website */

:root {
  --color-bg: #f8f7f4;
  --color-bg-alt: #f0efe8;
  --color-text: #1a1a1a;
  --color-text-muted: #5a5a5a;
  --color-accent: #421DC2;
  --color-accent-light: #5A2ED9;
  --color-border: #e0ddd6;
  --font-serif: "Cormorant Garamond", Georgia, serif;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --max-width: 720px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 247, 244, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.logo-img {
  display: block;
  height: 36px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav a:hover {
  color: var(--color-text);
}

.nav-cta {
  color: var(--color-accent) !important;
  font-weight: 600;
}

.nav-cta:hover {
  color: var(--color-accent-light) !important;
}

/* Hero */
.hero {
  padding: var(--space-lg) 0;
  text-align: center;
  position: relative;
  background-image: linear-gradient(rgba(248, 247, 244, 0.6), rgba(248, 247, 244, 0.6)), url('images/hero-bg.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 var(--space-md);
  color: var(--color-text);
}

.hero h1 em {
  font-style: italic;
  color: var(--color-accent);
}

.hero-lead {
  font-size: 1.1875rem;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-lg);
  max-width: 42ch;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  border-radius: 6px;
  transition: background-color 0.2s ease, transform 0.15s ease;
}

.btn-primary {
  background-color: var(--color-accent);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-accent-light);
}

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

/* Stats */
.stats {
  padding: var(--space-md) 0;
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}

.stats-grid {
  display: grid;
  gap: var(--space-lg);
  text-align: center;
}

@media (min-width: 600px) {
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
  }
}

.stat {
  padding: var(--space-md) 0;
}

.stat-value {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--space-xs);
}

.stat-label {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Sections */
h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 600;
  margin: 0 0 var(--space-sm);
  color: var(--color-text);
}

.section-lead {
  color: var(--color-text-muted);
  margin: 0 0 var(--space-lg);
  font-size: 1.0625rem;
}

/* Services */
.services {
  padding: var(--space-lg) 0;
  background-color: var(--color-bg-alt);
}

.services-grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 600px) {
  .services-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.service-card {
  background: white;
  padding: var(--space-lg);
  border-radius: 10px;
  border: 2px solid var(--color-border);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.service-card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  border-color: var(--color-accent);
}


.service-icon {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--color-accent);
}

.service-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.service-card h3 {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 600;
  margin: 0 0 var(--space-sm);
  color: var(--color-text);
}

.service-card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* About */
.about {
  padding: var(--space-lg) 0;
}

.about-image {
  width: 100%;
  max-width: 480px;
  height: auto;
  border-radius: 8px;
  margin-bottom: var(--space-lg);
  object-fit: cover;
}

.about-text {
  max-width: 55ch;
  margin: 0;
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

/* Enquire */
.enquire {
  padding: var(--space-lg) 0;
  background-color: var(--color-bg-alt);
}

.enquire-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 540px;
}

.form-row {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 500px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: white;
  color: var(--color-text);
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #9a9a9a;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.enquire-form .btn {
  margin-top: var(--space-sm);
  align-self: flex-start;
}

/* Footer */
.footer {
  padding: var(--space-md) 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 var(--space-xs);
  color: var(--color-text);
}

.footer-text {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ---- Animations (GPU-friendly: transform + opacity only) ---- */

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scale-in {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Hero: run once on load, no JS — staggered fade-in-up */
.hero h1 {
  opacity: 0;
  animation: fade-in-up 1.2s cubic-bezier(0.22, 1, 0.36, 1) 0.2s forwards;
}

.hero-lead {
  opacity: 0;
  animation: fade-in-up 1.2s cubic-bezier(0.22, 1, 0.36, 1) 0.6s forwards;
}

.hero .btn {
  opacity: 0;
  animation: fade-in-up 1s cubic-bezier(0.22, 1, 0.36, 1) 0.9s forwards;
}

/* Scroll-triggered: initial state */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1.1s cubic-bezier(0.22, 1, 0.36, 1),
              transform 1.1s cubic-bezier(0.22, 1, 0.36, 1);
}

.animate-on-scroll.animate-fade-only {
  transform: none;
}

.animate-on-scroll.animate-scale {
  transform: scale(0.97);
}

.animate-on-scroll.in-view {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Stagger delays for grids */
.animate-on-scroll[data-delay="1"] { transition-delay: 0.2s; }
.animate-on-scroll[data-delay="2"] { transition-delay: 0.4s; }
.animate-on-scroll[data-delay="3"] { transition-delay: 0.6s; }
.animate-on-scroll[data-delay="4"] { transition-delay: 0.3s; }
.animate-on-scroll[data-delay="5"] { transition-delay: 0.6s; }

/* Service cards: subtle lift on hover (already have transition) */
.service-card {
  transform: translateY(0);
  transition: box-shadow 0.5s ease, border-color 0.5s ease, transform 0.5s ease;
}

.service-card:hover {
  transform: translateY(-4px);
}

/* Button: subtle shine on hover (lightweight) */
.btn-primary {
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.15),
    transparent
  );
  transition: left 1s ease;
}

.btn-primary:hover::after {
  left: 100%;
}

/* Nav link underline slide (optional, minimal cost) */
.nav a:not(.nav-cta) {
  position: relative;
}

.nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.5s ease;
}

.nav a:not(.nav-cta):hover::after {
  width: 100%;
}

/* Respect user motion preference */
@media (prefers-reduced-motion: reduce) {
  .hero h1,
  .hero-lead,
  .hero .btn { animation: none; opacity: 1; }
  .animate-on-scroll { opacity: 1; transform: none; transition: none; }
  .service-card:hover { transform: none; }
  .btn-primary::after { display: none; }
}