/* ==========================================================================
   Rathgar Maths Grinds Styles
   ========================================================================== */

:root {
  /* Colors */
  --color-bg: #FFFFFF;
  --color-bg-alt: #F9FAFB;
  --color-text: #1A2332;
  --color-text-muted: #4B5563;
  --color-accent: #2563EB;
  --color-accent-dark: #1D4ED8;
  --color-accent-light: #EFF4FF;
  --color-border: #E5E7EB;
  --color-success: #16A34A;
  --color-success-bg: #F0FDF4;
  --color-error: #DC2626;
  --color-error-bg: #FEF2F2;

  /* Type */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  /* Spacing */
  --section-padding: 100px;
  --container-width: 1180px;

  /* Effects */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(26, 35, 50, 0.06);
  --shadow-md: 0 8px 24px rgba(26, 35, 50, 0.08);
  --shadow-lg: 0 20px 48px rgba(26, 35, 50, 0.12);
  --transition: 0.2s ease;
}

/* ---------- Reset ---------- */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  overflow-x: hidden;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

button {
  font-family: inherit;
}

h1, h2, h3, h4 {
  line-height: 1.25;
  margin: 0 0 16px;
  font-weight: 700;
}

p {
  margin: 0 0 16px;
  color: var(--color-text-muted);
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding) 0;
}

.eyebrow {
  color: var(--color-accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 13px;
  margin-bottom: 12px;
}

.center {
  text-align: center;
}

.eyebrow.center,
h2.center,
.section-sub.center {
  margin-left: auto;
  margin-right: auto;
}

.section-sub {
  color: var(--color-text-muted);
  font-size: 18px;
  max-width: 640px;
}

.section-sub.center {
  margin-bottom: 48px;
}

h2 {
  font-size: 32px;
}

h2.center {
  margin-bottom: 16px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 16px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 17px;
}

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

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.logo span {
  color: var(--color-accent);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.primary-nav ul {
  display: flex;
  gap: 28px;
}

.nav-link {
  color: var(--color-text);
  font-weight: 500;
  font-size: 15px;
  transition: color var(--transition);
}

.nav-link:hover {
  color: var(--color-accent);
}

.nav-cta {
  padding: 10px 20px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
  padding: 72px 0 96px;
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 56px;
  align-items: center;
}

.hero h1 {
  font-size: 52px;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: 19px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin: 32px 0 24px;
}

.hero-trust {
  font-weight: 600;
  color: var(--color-text);
  font-size: 15px;
}

.hero-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* ---------- Trust bar ---------- */
.trust-bar {
  background: var(--color-accent);
  padding: 28px 0;
}

.trust-bar-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 20px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 600;
  font-size: 15px;
  flex: 1 1 200px;
  justify-content: center;
}

/* ---------- About ---------- */
.about-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 64px;
  align-items: center;
}

.about-media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.about-list {
  margin-top: 20px;
}

.about-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 12px;
  color: var(--color-text-muted);
}

.about-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
}

/* ---------- Card grid (Subjects) ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.card h3 {
  font-size: 19px;
  margin-bottom: 8px;
}

.card p {
  font-size: 15px;
  margin-bottom: 0;
}

.subjects {
  background: var(--color-bg-alt);
}

/* ---------- How it works ---------- */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
  margin-top: 16px;
}

.step {
  text-align: center;
  padding: 0 12px;
}

.step-number {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-weight: 800;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.step h3 {
  font-size: 19px;
}

.step p {
  font-size: 15px;
}

/* ---------- FAQ ---------- */
.faq-container {
  max-width: 800px;
}

.accordion-item {
  border-bottom: 1px solid var(--color-border);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: none;
  border: none;
  padding: 22px 4px;
  text-align: left;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
}

.accordion-icon {
  flex-shrink: 0;
  font-size: 22px;
  color: var(--color-accent);
  transition: transform var(--transition);
  font-weight: 400;
}

.accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(45deg);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease, padding var(--transition);
}

.accordion-panel p {
  padding: 0 4px 22px;
  margin: 0;
  font-size: 15px;
}

/* ---------- Enquiry Form ---------- */
.enquire {
  background: var(--color-accent-light);
}

.enquire-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.3fr);
  gap: 56px;
  align-items: flex-start;
}

.enquire-intro h2 {
  font-size: 32px;
}

.privacy-note {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: 24px;
}

.enquire-form-wrap {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 40px;
}

.form-row {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
}

.form-row-group {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
}

.form-row label {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--color-text);
}

.req {
  color: var(--color-error);
}

.form-row input,
.form-row select,
.form-row textarea {
  font-family: inherit;
  font-size: 15px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.form-row input.invalid,
.form-row select.invalid,
.form-row textarea.invalid {
  border-color: var(--color-error);
}

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

.field-error {
  color: var(--color-error);
  font-size: 13px;
  margin-top: 6px;
  min-height: 0;
  display: none;
}

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

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.btn-submit {
  width: 100%;
  margin-top: 8px;
}

.form-status {
  margin: 16px 0 0;
  padding: 0;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-align: center;
  min-height: 0;
}

.form-status.success {
  color: var(--color-success);
  background: var(--color-success-bg);
  padding: 14px;
}

.form-status.error {
  color: var(--color-error);
  background: var(--color-error-bg);
  padding: 14px;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-text);
  color: #C9CED8;
  padding: 64px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr));
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-logo {
  color: #fff;
  margin-bottom: 12px;
}

.footer-brand p {
  color: #A8AFBD;
  font-size: 14px;
}

.footer-inner h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 16px;
}

.footer-inner ul li {
  margin-bottom: 10px;
  font-size: 14px;
}

.footer-inner a {
  color: #C9CED8;
  transition: color var(--transition);
}

.footer-inner a:hover {
  color: #fff;
}

.footer-bottom {
  padding: 24px;
  text-align: center;
  font-size: 13px;
  color: #8891A1;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 900px) {
  :root {
    --section-padding: 64px;
  }

  .nav-toggle {
    display: flex;
  }

  .primary-nav {
    position: fixed;
    top: 76px;
    right: 0;
    width: min(320px, 85vw);
    height: calc(100vh - 76px);
    height: calc(100dvh - 76px);
    background: var(--color-bg);
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    align-items: flex-start;
    padding: 32px 24px;
    gap: 24px;
    transform: translateX(100%);
    transition: transform var(--transition);
    overflow-y: auto;
  }

  .primary-nav.open {
    transform: translateX(0);
  }

  .primary-nav ul {
    flex-direction: column;
    gap: 20px;
    width: 100%;
  }

  .nav-link {
    font-size: 18px;
  }

  .nav-cta {
    width: 100%;
    justify-content: center;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero-media {
    order: -1;
  }

  .hero h1 {
    font-size: 38px;
  }

  .about-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .about-media {
    max-width: 320px;
    margin: 0 auto;
  }

  .card-grid,
  .steps-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .enquire-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .enquire-form-wrap {
    padding: 28px 20px;
  }

  .form-row-group {
    grid-template-columns: minmax(0, 1fr);
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .hero h1 {
    font-size: 32px;
  }

  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .trust-bar-inner {
    justify-content: flex-start;
  }

  .trust-item {
    justify-content: flex-start;
    flex: 1 1 100%;
  }
}