/* ===============================================================
   MENTORIS -- ASOCIAȚIA ȘCOALA BUNĂ
   style.css -- Design tokens, nav, animations, reveal
   =============================================================== */

/* -- Design Tokens -- */
:root {
  /* Colors */
  --color-primary:       #2B4D79;
  --color-primary-mid:   #697E98;
  --color-primary-light: #9FBCD6;
  --color-bg:            #FBFCFC;
  --color-bg-alt:        #EEF4F9;
  --color-text:          #2B4D79;
  --color-text-muted:    #697E98;
  --color-border:        #9FBCD6;

  /* Typography */
  --font-heading: 'Fraunces', Georgia, serif;
  --font-body:    'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

  /* Layout */
  --max-width: 1200px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(43,77,121,0.08), 0 1px 2px rgba(43,77,121,0.04);
  --shadow-md: 0 4px 20px rgba(43,77,121,0.12), 0 2px 8px rgba(43,77,121,0.06);
  --shadow-lg: 0 10px 40px rgba(43,77,121,0.18), 0 4px 16px rgba(43,77,121,0.08);
  --shadow-xl: 0 20px 60px rgba(43,77,121,0.22), 0 8px 24px rgba(43,77,121,0.1);

  /* Easing */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-snap:   cubic-bezier(0.33, 1, 0.68, 1);

  /* ── Standard Tokens (auto-injected) ── */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --radius-default: 4px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
}

/* -- Base -- */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* -- Font utilities -- */
.font-heading { font-family: var(--font-heading); }
.font-body    { font-family: var(--font-body); }

/* ===========================
   NAVIGATION
   =========================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10000;
  background-color: rgba(251, 252, 252, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(159, 188, 214, 0.25);
  transition: box-shadow 0.3s var(--ease-snap), background-color 0.3s var(--ease-snap);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-md);
  background-color: rgba(251, 252, 252, 0.98);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.875rem 1.5rem;
  gap: 1.5rem;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: 50%;
  transition: transform 0.3s var(--ease-spring);
}

.nav-logo:hover .nav-logo-img {
  transform: rotate(-8deg) scale(1.05);
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.nav-logo-main {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: -0.01em;
}

.nav-logo-sub {
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary-mid);
}

/* Desktop Nav */
.nav-desktop {
  display: none;
  flex: 1;
  justify-content: center;
}

@media (min-width: 1024px) {
  .nav-desktop { display: flex; }
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.875rem;
  border-radius: 0.625rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-primary-mid);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link--active {
  color: var(--color-primary);
  background-color: rgba(159, 188, 214, 0.18);
}

/* Dropdowns */
.nav-dropdown-wrapper {
  position: relative;
}

.nav-dropdown-trigger .nav-chevron {
  transition: transform 0.25s var(--ease-snap);
}

.nav-dropdown-wrapper:hover .nav-chevron,
.nav-dropdown-wrapper.is-open .nav-chevron {
  transform: rotate(180deg);
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 180px;
  background-color: var(--color-bg);
  border: 1px solid rgba(159, 188, 214, 0.35);
  border-radius: 0.875rem;
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s var(--ease-snap), transform 0.2s var(--ease-snap);
  z-index: 100;
}

.nav-dropdown-wrapper:hover .nav-dropdown,
.nav-dropdown-wrapper.is-open .nav-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.875rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary-mid);
  text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.nav-dropdown-item:hover {
  background-color: rgba(159, 188, 214, 0.2);
  color: var(--color-primary);
}

/* CTA button */
.nav-cta {
  display: none;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.2rem;
  background-color: var(--color-primary);
  color: var(--color-bg) !important;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: 0.75rem;
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.2s var(--ease-snap), box-shadow 0.2s ease;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-cta:hover {
  background-color: #1a3558;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

@media (min-width: 640px) {
  .nav-cta { display: inline-flex; }
}

/* Mobile toggle */
.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 0.625rem;
  color: var(--color-primary);
  transition: background-color 0.2s ease;
}

.nav-toggle:hover {
  background-color: rgba(159, 188, 214, 0.2);
}

@media (min-width: 1024px) {
  .nav-toggle { display: none; }
}

/* ===========================
   MOBILE MENU
   =========================== */

.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  background-color: var(--color-primary);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  opacity: 0;
  transform: translateY(-12px) scale(0.98);
  pointer-events: none;
  transition: opacity 0.35s var(--ease-spring), transform 0.35s var(--ease-spring);
}

.mobile-menu.is-open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.mobile-menu-inner {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 6rem 2rem 3rem;
  gap: 2rem;
}

.mobile-nav-link {
  display: block;
  padding: 1rem 0;
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 5vw, 2rem);
  font-weight: 700;
  color: rgba(251, 252, 252, 0.75);
  text-decoration: none;
  border-bottom: 1px solid rgba(159, 188, 214, 0.2);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.mobile-nav-link:hover,
.mobile-nav-link--active {
  color: var(--color-bg);
  padding-left: 0.5rem;
}

.mobile-nav-section {
  border-bottom: 1px solid rgba(159, 188, 214, 0.2);
  padding-bottom: 1rem;
}

.mobile-nav-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary-light);
  margin-bottom: 0.5rem;
}

.mobile-nav-sub-link {
  display: block;
  padding: 0.5rem 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: rgba(251, 252, 252, 0.65);
  text-decoration: none;
  transition: color 0.2s ease;
}

.mobile-nav-sub-link:hover {
  color: var(--color-bg);
}

.mobile-nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 2rem;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 1rem;
  font-weight: 700;
  border-radius: 1rem;
  text-decoration: none;
  align-self: flex-start;
  margin-top: auto;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.mobile-nav-cta:hover {
  background-color: var(--color-bg);
  transform: translateY(-2px);
}

/* ===========================
   ICONS
   =========================== */

.icon {
  display: inline-block;
  width: 1.25em;
  height: 1.25em;
  vertical-align: -0.15em;
  flex-shrink: 0;
}

.icon.hidden { display: none; }
.icon-sm { width: 1em;   height: 1em; }
.icon-lg { width: 1.5em; height: 1.5em; }
.icon-xl { width: 2em;   height: 2em; }

/* ===========================
   SCROLL REVEAL
   =========================== */

[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease-spring), transform 0.8s var(--ease-spring);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-stagger] > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-spring), transform 0.6s var(--ease-spring);
}

[data-reveal-stagger].is-visible > *:nth-child(1) { transition-delay: 0ms; }
[data-reveal-stagger].is-visible > *:nth-child(2) { transition-delay: 80ms; }
[data-reveal-stagger].is-visible > *:nth-child(3) { transition-delay: 160ms; }
[data-reveal-stagger].is-visible > *:nth-child(4) { transition-delay: 240ms; }
[data-reveal-stagger].is-visible > *:nth-child(5) { transition-delay: 320ms; }
[data-reveal-stagger].is-visible > *:nth-child(6) { transition-delay: 400ms; }

[data-reveal-stagger].is-visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   KEYFRAME ANIMATIONS
   =========================== */

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-10px); }
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  33%       { transform: translateY(-14px) rotate(1deg); }
  66%       { transform: translateY(-6px) rotate(-1deg); }
}

@keyframes scrollBob {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50%       { transform: translateY(8px); opacity: 0.5; }
}

@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

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

@keyframes pulseBubble {
  0%, 100% { box-shadow: 0 0 0 0 rgba(159, 188, 214, 0.3); }
  50%       { box-shadow: 0 0 0 12px rgba(159, 188, 214, 0); }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ===========================
   HERO ELEMENTS
   =========================== */

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  background-color: rgba(159, 188, 214, 0.15);
  border: 1px solid rgba(159, 188, 214, 0.35);
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #9FBCD6;
  backdrop-filter: blur(8px);
}

.scroll-bob {
  animation: scrollBob 2s ease-in-out infinite;
}

.scroll-dot {
  animation: scrollBob 2s ease-in-out infinite 0.3s;
}

/* ===========================
   FLOATING BUBBLES
   =========================== */

.bubble {
  position: absolute;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  user-select: none;
  padding: 12px;
  background: radial-gradient(135deg, rgba(251,252,252,0.95) 0%, rgba(238,244,249,0.9) 100%);
  border: 1.5px solid rgba(159, 188, 214, 0.5);
  box-shadow: var(--shadow-md);
  transition:
    transform 0.35s var(--ease-spring),
    box-shadow 0.35s var(--ease-spring),
    border-color 0.25s ease;
  will-change: transform;
}

.bubble:hover {
  transform: scale(1.1) translateY(-4px) !important;
  box-shadow: var(--shadow-xl);
  border-color: rgba(43, 77, 121, 0.4);
  z-index: 10;
}

.bubble:active {
  transform: scale(0.97) !important;
}

.bubble-icon {
  color: var(--color-primary);
  margin-bottom: 5px;
  transition: transform 0.3s var(--ease-spring);
}

.bubble:hover .bubble-icon {
  transform: scale(1.2) rotate(-5deg);
}

.bubble-label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  line-height: 1.2;
  max-width: 80%;
  word-break: break-word;
}

/* size variants */
.bubble--lg { width: 130px; height: 130px; }
.bubble--md { width: 110px; height: 110px; }
.bubble--sm { width: 92px;  height: 92px; }

.bubble--lg .bubble-label { font-size: 0.7rem; }
.bubble--sm .bubble-label { font-size: 0.6rem; }

/* accent variants */
.bubble--accent {
  background: radial-gradient(135deg, rgba(43,77,121,0.9) 0%, rgba(43,77,121,0.8) 100%);
  border-color: rgba(159, 188, 214, 0.4);
}

.bubble--accent .bubble-icon,
.bubble--accent .bubble-label {
  color: #FBFCFC;
}

/* ===========================
   BUBBLE DETAIL PANEL
   =========================== */

#bubble-detail-overlay {
  pointer-events: none;
  transition: opacity 0.3s var(--ease-spring);
}

#bubble-detail-overlay[aria-hidden="false"] {
  pointer-events: auto;
  opacity: 1;
}

#bubble-detail-overlay[aria-hidden="true"] {
  opacity: 0;
}

.bubble-detail-backdrop {
  transition: opacity 0.3s ease;
}

.bubble-detail-card {
  background: var(--color-bg);
  border-radius: 1.5rem;
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(159, 188, 214, 0.3);
  transform: scale(0.92) translateY(12px);
  transition: transform 0.4s var(--ease-spring), opacity 0.3s ease;
  opacity: 0;
  text-align: center;
}

#bubble-detail-overlay[aria-hidden="false"] .bubble-detail-card {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.bubble-detail-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(159, 188, 214, 0.15);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-mid);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.bubble-detail-close:hover {
  background: rgba(43, 77, 121, 0.1);
  color: var(--color-primary);
}

.bubble-detail-icon-wrap {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(43,77,121,0.1), rgba(159,188,214,0.2));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  color: var(--color-primary);
}

.bubble-detail-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.bubble-detail-body {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--color-primary-mid);
  max-width: 42ch;
  margin: 0 auto 1.5rem;
}

.bubble-detail-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  background-color: var(--color-primary);
  color: var(--color-bg);
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: 0.875rem;
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.2s var(--ease-snap);
}

.bubble-detail-cta:hover {
  background-color: #1a3558;
  transform: translateY(-2px);
}

/* ===========================
   REDUCED MOTION
   =========================== */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .bubble { animation: none !important; }
}