/* =============================================
   NEXORA HUB - Footer Styles
   File: assets/css/nexora-footer.css
   ============================================= */

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

/* ── CSS Variables ── */
:root {
  --nex-black:    #0d0d0d;
  --nex-dark:     #161616;
  --nex-surface:  #1e1e1e;
  --nex-red:      #e02020;
  --nex-red-dark: #b81818;
  --nex-blue:     #1a73e8;
  --nex-white:    #ffffff;
  --nex-muted:    rgba(255,255,255,0.55);
  --nex-border:   rgba(255,255,255,0.08);
  --nex-radius:   6px;
  --nex-font:     'Barlow', sans-serif;
  --nex-font-cond:'Barlow Condensed', sans-serif;
  --transition:   0.25s ease;
}

/* ── Reset ── */
#nexora-footer *,
#nexora-footer *::before,
#nexora-footer *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Footer shell ── */
#nexora-footer {
  background: var(--nex-black);
  font-family: var(--nex-font);
  color: var(--nex-white);
  width: 100%;
}

/* ── Main section ── */
.footer-main {
  padding: 60px 0 48px;
  border-top: 1px solid var(--nex-border);
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: 280px 160px 200px 1fr;
  gap: 48px;
  align-items: start;
}

/* ── Brand column ── */
.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.footer-logo svg {
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--nex-font-cond);
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--nex-white);
  line-height: 1;
}

.footer-tagline {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--nex-muted);
  margin-bottom: 28px;
  max-width: 260px;
}

/* ── Socials ── */
.footer-socials {
  display: flex;
  gap: 8px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--nex-border);
  color: var(--nex-muted);
  text-decoration: none;
  transition: var(--transition);
  background: transparent;
}

.social-link:hover {
  background: var(--nex-red);
  border-color: var(--nex-red);
  color: var(--nex-white);
  transform: translateY(-2px);
}

/* ── Link columns ── */
.footer-col {
  display: flex;
  flex-direction: column;
}

/* Desktop: hide toggle button, show title as heading */
.footer-col-toggle {
  background: none;
  border: none;
  cursor: default;
  padding: 0;
  color: var(--nex-white);
  font-family: var(--nex-font-cond);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
}

.toggle-icon {
  display: none; /* hidden on desktop */
  transition: transform var(--transition);
  flex-shrink: 0;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--nex-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition), padding-left var(--transition);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--nex-white);
  padding-left: 6px;
}

/* ── Newsletter column ── */
.footer-newsletter {
  max-width: 360px;
}

.newsletter-title {
  font-family: var(--nex-font-cond);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 14px;
  color: var(--nex-white);
}

.newsletter-desc {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--nex-muted);
  margin-bottom: 22px;
}

/* ── Newsletter form ── */
.input-row {
  display: flex;
  align-items: center;
  border: 1.5px solid rgba(255,255,255,0.18);
  border-radius: 50px;
  overflow: hidden;
  background: rgba(255,255,255,0.04);
  transition: border-color var(--transition);
}

.input-row:focus-within {
  border-color: rgba(255,255,255,0.4);
}

.newsletter-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 12px 18px;
  font-size: 0.875rem;
  font-family: var(--nex-font);
  color: var(--nex-white);
  min-width: 0;
}

.newsletter-input::placeholder {
  color: var(--nex-muted);
}

.newsletter-btn {
  background: var(--nex-red);
  border: none;
  border-radius: 50px;
  padding: 12px 22px;
  color: var(--nex-white);
  font-family: var(--nex-font-cond);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
  cursor: pointer;
  transition: background var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  margin: 3px;
}

.newsletter-btn:hover {
  background: var(--nex-red-dark);
}

.newsletter-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

/* Loader spinner */
.btn-loader {
  display: none;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.newsletter-btn.loading .btn-loader { display: block; }
.newsletter-btn.loading .btn-text   { display: none; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Feedback message */
.newsletter-feedback {
  margin-top: 10px;
  font-size: 0.82rem;
  min-height: 20px;
  padding-left: 4px;
  transition: opacity var(--transition);
}

.newsletter-feedback.success { color: #4ade80; }
.newsletter-feedback.error   { color: #f87171; }

/* ── Footer bottom bar ── */
.footer-bottom {
  background: var(--nex-blue);
  text-align: center;
  padding: 14px 32px;
}

.footer-bottom p {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: var(--nex-white);
}

/* =============================================
   RESPONSIVE — Tablet (≤1024px)
   ============================================= */
@media (max-width: 1024px) {
  .footer-container {
    grid-template-columns: 1fr 1fr;
    gap: 40px 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 24px;
    align-items: flex-start;
  }

  .footer-tagline {
    max-width: 340px;
  }

  .footer-newsletter {
    grid-column: 1 / -1;
    max-width: 100%;
  }
}

/* =============================================
   RESPONSIVE — Mobile (≤768px)
   ============================================= */
@media (max-width: 768px) {
  .footer-main {
    padding: 40px 0 32px;
  }

  .footer-container {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 0 20px;
  }

  /* Brand full width */
  .footer-brand {
    flex-direction: column;
    gap: 0;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--nex-border);
  }

  .footer-tagline {
    max-width: 100%;
  }

  /* Accordion columns */
  .footer-col {
    border-bottom: 1px solid var(--nex-border);
  }

  .footer-col-toggle {
    pointer-events: all;
    cursor: pointer;
    padding: 16px 0;
    width: 100%;
    margin-bottom: 0;
  }

  .toggle-icon {
    display: block;
  }

  .footer-col-toggle[aria-expanded="true"] .toggle-icon {
    transform: rotate(180deg);
  }

  /* Collapse by default */
  .footer-links {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.4,0,0.2,1),
                padding 0.35s ease;
    padding-bottom: 0;
  }

  /* Open state */
  .footer-col.open .footer-links {
    max-height: 300px;
    padding-bottom: 18px;
  }

  /* Newsletter */
  .footer-newsletter {
    margin-top: 28px;
    max-width: 100%;
  }

  .newsletter-title {
    font-size: 1rem;
  }

  .input-row {
    flex-direction: column;
    border-radius: var(--nex-radius);
    padding: 4px;
    gap: 8px;
    background: var(--nex-surface);
    border-color: var(--nex-border);
  }

  .newsletter-input {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--nex-radius);
  }

  .newsletter-btn {
    width: 100%;
    justify-content: center;
    border-radius: var(--nex-radius);
    margin: 0;
    padding: 12px;
  }

  .footer-bottom {
    padding: 12px 20px;
  }

  .footer-bottom p {
    font-size: 0.78rem;
  }
}

/* =============================================
   RESPONSIVE — Small mobile (≤480px)
   ============================================= */
@media (max-width: 480px) {
  .footer-logo svg {
    width: 36px;
    height: 30px;
  }

  .logo-text {
    font-size: 1.6rem;
  }
}