/* ==========================================================================
   Mentiva Theme - EdTech Cognitive & Brain Development Stylesheet
   Inspired by MentalUP design principles (Playful, Scientific, Friendly)
   Strictly decoupled - Zero inline CSS
   ========================================================================== */

:root {
  /* Mentiva Core Brand Tokens */
  --mentiva-bg: #f8fafc;
  --mentiva-surface: #ffffff;
  --mentiva-surface-subtle: #f1f5f9;
  --mentiva-card-border: rgba(148, 163, 184, 0.18);
  
  --mentiva-text-title: #0f172a;
  --mentiva-text-body: #334155;
  --mentiva-text-muted: #64748b;
  
  /* Primary & Action Colors */
  --mentiva-primary: #4f46e5;
  --mentiva-primary-rgb: 79, 70, 229;
  --mentiva-primary-hover: #4338ca;
  --mentiva-primary-light: #eef2ff;
  
  --mentiva-cta: #ff5757;
  --mentiva-cta-hover: #e04545;
  --mentiva-cta-shadow: rgba(255, 87, 87, 0.28);
  
  /* Cognitive Skills Palette */
  --skill-attention: #f59e0b;
  --skill-attention-bg: #fef3c7;
  --skill-memory: #06b6d4;
  --skill-memory-bg: #cffafe;
  --skill-logic: #10b981;
  --skill-logic-bg: #d1fae5;
  --skill-visual: #ec4899;
  --skill-visual-bg: #fce7f3;
  --skill-verbal: #8b5cf6;
  --skill-verbal-bg: #ede9fe;
  
  /* Radii */
  --mentiva-radius-card: 20px;
  --mentiva-radius-pill: 9999px;
  --mentiva-radius-btn: 14px;
  
  /* Shadows */
  --mentiva-shadow-soft: 0 4px 20px rgba(15, 23, 42, 0.05);
  --mentiva-shadow-card: 0 10px 30px rgba(15, 23, 42, 0.07);
  --mentiva-shadow-hover: 0 18px 40px rgba(79, 70, 229, 0.14);
}

[data-bs-theme="dark"] {
  --mentiva-bg: #0b0f19;
  --mentiva-surface: #131b2e;
  --mentiva-surface-subtle: #1e293b;
  --mentiva-card-border: rgba(255, 255, 255, 0.08);
  
  --mentiva-text-title: #f8fafc;
  --mentiva-text-body: #cbd5e1;
  --mentiva-text-muted: #94a3b8;
  
  --mentiva-primary-light: rgba(79, 70, 229, 0.15);
  --mentiva-shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.35);
  --mentiva-shadow-card: 0 10px 30px rgba(0, 0, 0, 0.45);
}

body {
  background-color: var(--mentiva-bg);
  color: var(--mentiva-text-body);
  font-family: "Plus Jakarta Sans", "Outfit", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  letter-spacing: -0.01em;
}

/* ==========================================================================
   Mentiva Hero Section (Playful, High-Energy & Engaging)
   ========================================================================== */
.mentiva-hero-wrapper {
  position: relative;
  padding: 3rem 0 4.5rem;
  overflow: hidden;
}

.mentiva-hero-bg-blobs {
  position: absolute;
  top: -10%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, rgba(6, 182, 212, 0.08) 60%, transparent 80%);
  border-radius: 50%;
  filter: blur(60px);
  z-index: 0;
  pointer-events: none;
}

.mentiva-hero-content {
  position: relative;
  z-index: 1;
}

.mentiva-trust-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--mentiva-primary-light);
  color: var(--mentiva-primary);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.45rem 1.15rem;
  border-radius: var(--mentiva-radius-pill);
  margin-bottom: 1.25rem;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.08);
}

.mentiva-hero-headline {
  font-size: clamp(2.25rem, 4vw + 1rem, 3.75rem);
  font-weight: 800;
  line-height: 1.12;
  color: var(--mentiva-text-title);
  margin-bottom: 1.25rem;
  letter-spacing: -0.025em;
}

.mentiva-hero-headline .highlight-gradient {
  background: linear-gradient(135deg, #4f46e5 0%, #ec4899 50%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.mentiva-hero-subtitle {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--mentiva-text-muted);
  max-width: 54ch;
  margin-bottom: 2rem;
}

.mentiva-hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.25rem;
}

.btn-mentiva-cta {
  background: var(--mentiva-cta);
  color: #ffffff !important;
  font-weight: 700;
  font-size: 1.05rem;
  padding: 0.85rem 1.85rem;
  border-radius: var(--mentiva-radius-btn);
  border: none;
  box-shadow: 0 8px 24px var(--mentiva-cta-shadow);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-mentiva-cta:hover {
  background: var(--mentiva-cta-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255, 87, 87, 0.38);
}

.btn-mentiva-cta:active {
  transform: translateY(0) scale(0.98);
}

.btn-mentiva-secondary {
  background: var(--mentiva-surface);
  color: var(--mentiva-text-title) !important;
  font-weight: 600;
  font-size: 1.05rem;
  padding: 0.85rem 1.65rem;
  border-radius: var(--mentiva-radius-btn);
  border: 1px solid var(--mentiva-card-border);
  box-shadow: var(--mentiva-shadow-soft);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-mentiva-secondary:hover {
  border-color: var(--mentiva-primary);
  color: var(--mentiva-primary) !important;
  transform: translateY(-2px);
}

.mentiva-hero-badges-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.mentiva-badge-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--mentiva-text-muted);
  font-weight: 600;
}

.mentiva-badge-item i {
  color: var(--skill-logic);
  font-size: 1.1rem;
}

/* Hero Interactive Visual Sandbox Card */
.mentiva-hero-visual-card {
  position: relative;
  background: var(--mentiva-surface);
  border: 1px solid var(--mentiva-card-border);
  border-radius: 28px;
  padding: 2rem;
  box-shadow: var(--mentiva-shadow-card);
  transition: transform 0.3s ease;
}

.mentiva-hero-visual-card:hover {
  transform: translateY(-4px);
}

.mentiva-visual-floating-tag {
  position: absolute;
  top: -15px;
  right: 25px;
  background: #ffffff;
  color: #0f172a;
  padding: 0.45rem 1rem;
  border-radius: var(--mentiva-radius-pill);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  font-size: 0.82rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

/* ==========================================================================
   Cognitive Skills Bento Grid (5 Core Abilities)
   ========================================================================== */
.mentiva-section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3rem;
}

.mentiva-section-eyebrow {
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--mentiva-primary);
  margin-bottom: 0.5rem;
  display: inline-block;
}

.mentiva-section-title {
  font-size: clamp(1.85rem, 2.5vw + 1rem, 2.65rem);
  font-weight: 800;
  color: var(--mentiva-text-title);
  letter-spacing: -0.02em;
  margin-bottom: 0.85rem;
}

.mentiva-section-desc {
  font-size: 1.05rem;
  color: var(--mentiva-text-muted);
  line-height: 1.6;
}

.mentiva-skills-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.mentiva-skill-card {
  background: var(--mentiva-surface);
  border: 1px solid var(--mentiva-card-border);
  border-radius: var(--mentiva-radius-card);
  padding: 2rem;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.mentiva-skill-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--mentiva-shadow-hover);
  border-color: rgba(79, 70, 229, 0.3);
}

.mentiva-skill-card.col-attention { grid-column: span 6; }
.mentiva-skill-card.col-memory { grid-column: span 6; }
.mentiva-skill-card.col-logic { grid-column: span 4; }
.mentiva-skill-card.col-visual { grid-column: span 4; }
.mentiva-skill-card.col-verbal { grid-column: span 4; }

@media (max-width: 991px) {
  .mentiva-skill-card.col-attention,
  .mentiva-skill-card.col-memory,
  .mentiva-skill-card.col-logic,
  .mentiva-skill-card.col-visual,
  .mentiva-skill-card.col-verbal {
    grid-column: span 12;
  }
}

.skill-icon-bubble {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.bubble-attention { background: var(--skill-attention-bg); color: var(--skill-attention); }
.bubble-memory { background: var(--skill-memory-bg); color: var(--skill-memory); }
.bubble-logic { background: var(--skill-logic-bg); color: var(--skill-logic); }
.bubble-visual { background: var(--skill-visual-bg); color: var(--skill-visual); }
.bubble-verbal { background: var(--skill-verbal-bg); color: var(--skill-verbal); }

.mentiva-skill-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--mentiva-text-title);
  margin-bottom: 0.5rem;
}

.mentiva-skill-text {
  font-size: 0.95rem;
  color: var(--mentiva-text-muted);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.mentiva-skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.mentiva-skill-tag {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: var(--mentiva-radius-pill);
  background: var(--mentiva-surface-subtle);
  color: var(--mentiva-text-body);
}

/* ==========================================================================
   Age-Based Training Levels (Preschool, Primary, Middle School)
   ========================================================================== */
.mentiva-age-tabs-wrapper {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.mentiva-age-tab-btn {
  background: var(--mentiva-surface);
  border: 1px solid var(--mentiva-card-border);
  padding: 0.65rem 1.4rem;
  border-radius: var(--mentiva-radius-pill);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--mentiva-text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.mentiva-age-tab-btn.active,
.mentiva-age-tab-btn:hover {
  background: var(--mentiva-primary);
  color: #ffffff;
  border-color: var(--mentiva-primary);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25);
}

.mentiva-age-card {
  background: var(--mentiva-surface);
  border: 1px solid var(--mentiva-card-border);
  border-radius: var(--mentiva-radius-card);
  padding: 2rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: var(--mentiva-shadow-soft);
  transition: transform 0.2s ease;
}

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

.mentiva-age-icon {
  font-size: 2.25rem;
  margin-bottom: 1rem;
}

.mentiva-age-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--mentiva-text-title);
  margin-bottom: 0.5rem;
}

.mentiva-age-subtitle {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--mentiva-primary);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.mentiva-age-features {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.9rem;
  color: var(--mentiva-text-muted);
}

.mentiva-age-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}

.mentiva-age-features li i {
  color: var(--skill-logic);
}

/* ==========================================================================
   Parent & Pedagogical Trust Banner
   ========================================================================== */
.mentiva-parent-banner {
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);
  color: #ffffff;
  border-radius: 28px;
  padding: 3.5rem 3rem;
  margin: 4rem 0;
  position: relative;
  overflow: hidden;
}

.mentiva-parent-banner .banner-title {
  font-size: clamp(1.85rem, 2vw + 1rem, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.mentiva-parent-banner .banner-desc {
  font-size: 1.05rem;
  color: #c7d2fe;
  max-width: 58ch;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.mentiva-parent-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 767px) {
  .mentiva-parent-stats-grid {
    grid-template-columns: 1fr;
  }
}

.mentiva-stat-box {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  backdrop-filter: blur(10px);
}

.mentiva-stat-number {
  font-size: 2.25rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1;
  margin-bottom: 0.35rem;
}

.mentiva-stat-label {
  font-size: 0.85rem;
  color: #e0e7ff;
  font-weight: 600;
}

/* ==========================================================================
   Article / Content Cards Enhancement for Mentiva
   ========================================================================== */
.mentiva-content-section {
  padding: 3rem 0;
}

.mentiva-article-card {
  background: var(--mentiva-surface);
  border: 1px solid var(--mentiva-card-border);
  border-radius: var(--mentiva-radius-card);
  overflow: hidden;
  box-shadow: var(--mentiva-shadow-soft);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

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

.mentiva-article-thumb-wrap {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--mentiva-surface-subtle);
}

.mentiva-article-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.mentiva-article-card:hover .mentiva-article-thumb {
  transform: scale(1.05);
}

.mentiva-article-category-chip {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(8px);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.3rem 0.75rem;
  border-radius: var(--mentiva-radius-pill);
}

.mentiva-article-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.mentiva-article-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--mentiva-text-title);
  line-height: 1.4;
  margin-bottom: 0.65rem;
  text-decoration: none;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.mentiva-article-title:hover {
  color: var(--mentiva-primary);
}

.mentiva-article-summary {
  font-size: 0.9rem;
  color: var(--mentiva-text-muted);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.mentiva-article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--mentiva-card-border);
  padding-top: 1rem;
  font-size: 0.82rem;
  color: var(--mentiva-text-muted);
}

/* ==========================================================================
   Clinical & Cognitive Assessments (mod_test)
   ========================================================================== */
.mentiva-tests-section {
  padding: 4.5rem 0;
  background: var(--mentiva-card-bg);
  border-top: 1px solid var(--mentiva-card-border);
  border-bottom: 1px solid var(--mentiva-card-border);
}

.mentiva-test-card {
  background: var(--mentiva-bg);
  border: 1px solid var(--mentiva-card-border);
  border-radius: 20px;
  padding: 1.75rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
  overflow: hidden;
}

.mentiva-test-card:hover {
  transform: translateY(-4px);
  border-color: rgba(79, 70, 229, 0.4);
  box-shadow: 0 16px 32px -8px rgba(79, 70, 229, 0.12);
}

.mentiva-test-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.mentiva-test-category-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.75rem;
  border-radius: 100px;
  background: rgba(79, 70, 229, 0.08);
  color: var(--mentiva-primary);
}

.mentiva-test-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.1));
  color: var(--mentiva-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
}

.mentiva-test-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.65rem;
}

.mentiva-test-title a {
  color: var(--mentiva-text);
  text-decoration: none;
  transition: color 0.15s ease;
}

.mentiva-test-title a:hover {
  color: var(--mentiva-primary);
}

.mentiva-test-desc {
  font-size: 0.88rem;
  color: var(--mentiva-text-muted);
  line-height: 1.55;
  margin-bottom: 1.5rem;
}

.mentiva-test-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--mentiva-card-border);
  gap: 0.75rem;
}

.mentiva-test-meta {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  font-size: 0.8rem;
  color: var(--mentiva-text-muted);
  font-weight: 500;
}

.mentiva-test-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--mentiva-primary);
  text-decoration: none;
  transition: gap 0.2s ease;
}

.mentiva-test-btn:hover {
  gap: 0.65rem;
  color: var(--mentiva-primary-hover);
}

.mentiva-skill-progress-track {
  height: 8px;
  width: 180px;
}

.mentiva-progress-94 {
  width: 94%;
}

.mentiva-progress-88 {
  width: 88%;
}

.mentiva-progress-96 {
  width: 96%;
}