/* ==========================================================================
   SDA RESPONSIVE OVERRIDES
   Mobile-first, Premium Grid & Clamp adjustments
   This file is loaded AFTER style.css
   ========================================================================== */

/* 1. FLUID TYPOGRAPHY & SPACING (Variables Override) */
:root {
  /* Fluid Spacing (Desktop: 100px/80px, Mobile: 50px/20px) */
  --section-pad-y: clamp(3.125rem, 5vw + 1rem, 6.25rem); /* 50px to 100px */
  --section-pad-x: clamp(1.25rem, 4vw, 5rem);           /* 20px to 80px */
  
  /* Fluid Typography */
  --h1-size: clamp(1.875rem, 5vw + 1rem, 3.75rem);      /* 30px to 60px */
  --h2-size: clamp(1.5rem, 4vw + 1rem, 2.5rem);         /* 24px to 40px */
  --p-size: clamp(0.9375rem, 1vw + 0.5rem, 1.125rem);   /* 15px to 18px */
}

/* 2. GLOBAL RESET & PERFORMANCE */
html, body {
  overflow-x: hidden !important;
  width: 100% !important;
}

.container {
  width: 100% !important;
  max-width: 1440px !important;
  margin: 0 auto !important;
  padding-left: var(--section-pad-x) !important;
  padding-right: var(--section-pad-x) !important;
  box-sizing: border-box !important;
}

section {
  padding-top: var(--section-pad-y) !important;
  padding-bottom: var(--section-pad-y) !important;
}

/* Fluid Typography Apply */
h1 { font-size: var(--h1-size) !important; line-height: 1.2 !important; }
h2, .section-title { font-size: var(--h2-size) !important; line-height: 1.3 !important; }
p, .course-description, .founder-section-grid p { font-size: var(--p-size) !important; line-height: 1.6 !important; }

/* Responsive Images */
img {
  max-width: 100% !important;
  height: auto !important;
  object-fit: cover !important;
}

/* 3. BUTTONS (Touch Friendly & Responsive) */
.btn-primary, .btn-secondary {
  min-height: 48px !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
}

@media (max-width: 768px) {
  .btn-primary, .btn-secondary {
    width: 100% !important;
    max-width: 320px !important;
    margin: 0 auto !important;
  }
}

/* 4. NAVBAR RE-ENGINEERING */
@media (max-width: 992px) {
  .navbar {
    height: 64px !important;
    padding: 0 var(--section-pad-x) !important;
  }
  
  .logo {
    font-size: clamp(12px, 3.5vw, 15px) !important;
    white-space: normal !important;
    line-height: 1.2 !important;
    max-width: 55vw; /* Limits width so it wraps rather than pushes icons */
    gap: 8px !important;
  }
  
  .logo img {
    width: 32px !important;
    height: 32px !important;
    flex-shrink: 0;
  }

  .nav-links {
    position: fixed !important;
    top: 64px !important;
    left: 0 !important;
    width: 100% !important;
    height: calc(100vh - 64px) !important;
    background: var(--bg-primary) !important;
    backdrop-filter: blur(20px) !important;
    flex-direction: column !important;
    justify-content: flex-start !important;
    align-items: center !important;
    padding-top: 2rem !important;
    gap: 1.5rem !important;
    transform: translateX(100%) !important;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
    z-index: 999 !important;
    overflow-y: auto !important;
  }

  .nav-links.mobile-open {
    transform: translateX(0) !important;
  }

  body:has(.nav-links.mobile-open) {
    overflow-y: hidden !important;
  }

  .nav-auth {
    display: none !important; /* Move auth to mobile menu if needed, or hide on small */
  }
  .nav-links.mobile-open .nav-auth {
    display: flex !important;
    flex-direction: column !important;
    width: 100% !important;
    padding: 0 2rem !important;
  }
}

/* 5. HERO SECTION */
.hero {
  min-height: 100vh !important;
  height: auto !important;
  display: flex !important;
  align-items: center !important;
  padding-top: calc(64px + var(--section-pad-y)) !important; /* Account for navbar */
}

.hero-container {
  display: grid !important;
  grid-template-columns: 1fr 1fr !important;
  gap: 3rem !important;
  align-items: center !important;
}

@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr !important;
    text-align: center !important;
  }
  
  .hero-actions {
    justify-content: center !important;
    flex-direction: column !important;
    gap: 1rem !important;
  }
  
  .hero-image-wrapper {
    margin: 0 auto !important;
    max-width: 400px !important;
  }
}

/* 6. FOUNDER SECTION */
.founder-section-grid {
  display: grid !important;
  grid-template-columns: 1fr 1.2fr !important;
  gap: 3rem !important;
  align-items: center !important;
}

@media (max-width: 992px) {
  .founder-section-grid {
    grid-template-columns: 1fr !important;
    text-align: center !important;
  }
  
  .founder-section-grid > div:first-child {
    order: 2 !important; /* Text below image */
  }
  
  .founder-section-grid > div:last-child {
    order: 1 !important; /* Image on top */
    margin: 0 auto !important;
    max-width: 320px !important;
  }

  .founder-cards-grid {
    justify-content: center !important;
  }
}

/* 7. STATISTICS SECTION */
.stats-grid {
  display: grid !important;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)) !important;
  gap: 2rem !important;
  width: 100% !important;
}

@media (max-width: 576px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 1rem !important;
  }
  
  .stat-item {
    padding: 1.5rem 1rem !important;
  }
}

/* 8. COURSES SECTION (Grid Refactor) */
.courses-grid {
  display: grid !important;
  /* 4 columns on desktop naturally shrinking down */
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)) !important;
  gap: 2rem !important;
  width: 100% !important;
  padding: 10px 0 !important;
}

.course-card {
  width: 100% !important;
  height: 100% !important;
  display: flex !important;
  flex-direction: column !important;
}

.course-card .course-description {
  flex-grow: 1 !important; /* Equal height push */
}

/* 9. FOOTER SECTION */
.footer-container {
  display: grid !important;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)) !important;
  gap: 3rem !important;
}

@media (max-width: 768px) {
  .footer-container {
    text-align: center !important;
  }
  
  .footer-col {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
  }
}

/* 10. FORMS RESPONSIVENESS */
form .form-group input, 
form .form-group select, 
form .form-group textarea {
  width: 100% !important;
  box-sizing: border-box !important;
}

/* 11. WHATSAPP BUTTON (No Overlap) */
.whatsapp-float {
  width: clamp(45px, 6vw, 60px) !important;
  height: clamp(45px, 6vw, 60px) !important;
  bottom: clamp(20px, 4vw, 40px) !important;
  right: clamp(20px, 4vw, 40px) !important;
  z-index: 9999 !important; /* Ensure it stays above footer but doesn't block critical UI */
}

/* Admin Dashboard Grids */
.stats-cards-grid {
  display: grid !important;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)) !important;
  gap: 1.5rem !important;
}

@media (max-width: 576px) {
  .stats-cards-grid {
    grid-template-columns: 1fr !important;
  }
}

/* 12. STUDENT PROJECTS SHOWCASE */
.projects-grid {
  display: grid !important;
  grid-template-columns: repeat(3, 1fr) !important;
  gap: 32px !important;
  width: 100% !important;
}

.project-card {
  display: flex !important;
  flex-direction: column !important;
  background: var(--glass-bg) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  border-radius: 24px !important;
  overflow: hidden !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2) !important;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
  height: 100% !important;
  position: relative !important;
}

.project-card:hover {
  transform: translateY(-8px) !important;
  box-shadow: 0 20px 40px rgba(255, 75, 43, 0.15) !important;
  border-color: rgba(255, 75, 43, 0.3) !important;
}

.project-img-wrapper {
  width: 100% !important;
  height: 240px !important;
  position: relative !important;
  overflow: hidden !important;
}

.project-img-wrapper img {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;
  transition: transform 0.6s ease !important;
}

.project-card:hover .project-img-wrapper img {
  transform: scale(1.05) !important;
}

.project-badge {
  position: absolute !important;
  top: 16px !important;
  right: 16px !important;
  font-size: 13px !important;
  font-weight: 600 !important;
  padding: 6px 14px !important;
  border-radius: 20px !important;
  z-index: 10 !important;
  border: 1px solid transparent !important;
}

.project-badge.blue-badge { background: rgba(59, 130, 246, 0.2) !important; color: #3b82f6 !important; border-color: rgba(59, 130, 246, 0.3) !important; }
.project-badge.warning-badge { background: rgba(245, 158, 11, 0.2) !important; color: var(--warning) !important; border-color: rgba(245, 158, 11, 0.3) !important; }
.project-badge.danger-badge { background: rgba(239, 68, 68, 0.2) !important; color: var(--danger) !important; border-color: rgba(239, 68, 68, 0.3) !important; }

.project-content {
  padding: 32px !important;
  display: flex !important;
  flex-direction: column !important;
  flex-grow: 1 !important;
  justify-content: space-between !important;
}

.project-text {
  flex-grow: 1 !important;
}

.project-text h3 {
  font-size: clamp(22px, 3vw, 30px) !important; /* Mobile: 22px, Tablet: 26px, Desktop: 30px */
  margin-bottom: 12px !important;
  color: var(--text-primary) !important;
  line-height: 1.3 !important;
}

.project-text p {
  font-size: clamp(15px, 2vw, 18px) !important; /* Mobile: 15px, Desktop: 18px */
  color: var(--text-secondary) !important;
  line-height: 1.7 !important;
  margin-bottom: 24px !important;
}

.project-footer {
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  padding-top: 20px !important;
  border-top: 1px solid var(--border-color) !important;
  margin-top: auto !important;
}

.project-author {
  font-size: 14px !important;
  color: var(--text-muted) !important;
  font-weight: 600 !important;
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
}

.project-btn {
  font-size: 13px !important;
  padding: 10px 20px !important;
  border-radius: 8px !important;
  min-height: 40px !important; /* Slightly smaller than global buttons for cards */
}

/* Locked Project Specific */
.locked-project {
  opacity: 0.9 !important;
}

.project-lock-overlay {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  height: 100% !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  background: rgba(10, 10, 12, 0.7) !important;
  backdrop-filter: blur(6px) !important;
  -webkit-backdrop-filter: blur(6px) !important;
  z-index: 15 !important;
  text-align: center !important;
  padding: 32px !important;
}

.project-lock-overlay .lock-pulse-circle {
  width: 60px !important;
  height: 60px !important;
  background: rgba(255, 75, 43, 0.15) !important;
  border-radius: 50% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin-bottom: 16px !important;
  border: 1px solid var(--accent-color) !important;
}

.project-lock-overlay h4 {
  font-size: 18px !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  margin-bottom: 8px !important;
}

.project-lock-overlay p {
  font-size: 14px !important;
  color: var(--text-secondary) !important;
  max-width: 260px !important;
  line-height: 1.5 !important;
}

.disabled-btn {
  pointer-events: none !important;
  opacity: 0.5 !important;
}

/* Media Queries for Projects */
@media (max-width: 1200px) {
  /* Laptop */
  .projects-grid {
    grid-template-columns: repeat(3, 1fr) !important;
  }
}

@media (max-width: 992px) {
  /* Tablet */
  .projects-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 24px !important;
  }
  .project-img-wrapper {
    height: 220px !important;
  }
  .project-content {
    padding: 24px !important;
  }
}

@media (max-width: 768px) {
  /* Mobile */
  .projects-grid {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }
  
  .project-card {
    border-radius: 18px !important;
  }
  
  .project-img-wrapper {
    height: clamp(180px, 50vw, 220px) !important;
  }
  
  .project-content {
    padding: 20px !important;
  }
  
  .project-badge {
    font-size: 11px !important;
    padding: 4px 10px !important;
    top: 12px !important;
    right: 12px !important;
  }
  
  .project-footer {
    flex-direction: column !important;
    gap: 16px !important;
    align-items: center !important;
  }
  
  .project-author {
    margin-bottom: 4px !important;
  }
  
  .project-btn {
    width: 100% !important;
    max-width: 220px !important;
    height: 48px !important;
    justify-content: center !important;
  }
}

/* 13. AI CHATBOT WIDGET */
.chatbot-container {
  position: fixed !important;
  bottom: clamp(20px, 4vw, 40px) !important;
  right: clamp(20px, 4vw, 40px) !important;
  z-index: 99999 !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: flex-end !important;
}

/* Adjust Whatsapp float if chatbot is present to avoid overlap */
body:has(.chatbot-container) .whatsapp-float {
  right: clamp(80px, 10vw, 110px) !important;
}

.chatbot-toggler {
  width: 60px !important;
  height: 60px !important;
  background: var(--accent-gradient) !important;
  border-radius: 50% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  cursor: pointer !important;
  box-shadow: 0 10px 25px rgba(255, 75, 43, 0.4) !important;
  border: 2px solid rgba(255, 255, 255, 0.1) !important;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
  position: relative !important;
}

.chatbot-toggler:hover {
  transform: scale(1.05) !important;
}

.chatbot-toggler i {
  color: #fff !important;
  font-size: 24px !important;
  transition: transform 0.3s ease, opacity 0.3s ease !important;
  position: absolute !important;
}

.chatbot-toggler .fa-times {
  opacity: 0 !important;
  transform: scale(0.5) rotate(90deg) !important;
}

.chatbot-container.open .chatbot-toggler .fa-robot {
  opacity: 0 !important;
  transform: scale(0.5) rotate(-90deg) !important;
}

.chatbot-container.open .chatbot-toggler .fa-times {
  opacity: 1 !important;
  transform: scale(1) rotate(0) !important;
}

.chatbot-window {
  width: 350px !important;
  height: 500px !important;
  max-height: calc(100vh - 120px) !important;
  background: var(--bg-secondary) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: 20px !important;
  overflow: hidden !important;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3) !important;
  display: flex !important;
  flex-direction: column !important;
  margin-bottom: 20px !important;
  opacity: 0 !important;
  pointer-events: none !important;
  transform: translateY(20px) scale(0.9) !important;
  transform-origin: bottom right !important;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.chatbot-container.open .chatbot-window {
  opacity: 1 !important;
  pointer-events: auto !important;
  transform: translateY(0) scale(1) !important;
}

.chatbot-header {
  padding: 16px 20px !important;
  background: var(--bg-tertiary) !important;
  border-bottom: 1px solid var(--border-color) !important;
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
}

.chatbot-avatar {
  width: 36px !important;
  height: 36px !important;
  background: rgba(255, 75, 43, 0.15) !important;
  color: var(--accent-color) !important;
  border-radius: 50% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-size: 16px !important;
  border: 1px solid var(--accent-color) !important;
}

.chatbot-header-info {
  flex-grow: 1 !important;
}

.chatbot-header-info h4 {
  font-size: 15px !important;
  margin-bottom: 2px !important;
  color: var(--text-primary) !important;
}

.chatbot-header-info p {
  font-size: 11px !important;
  color: var(--success) !important;
  display: flex !important;
  align-items: center !important;
  gap: 4px !important;
}

.chatbot-messages {
  flex-grow: 1 !important;
  padding: 20px !important;
  overflow-y: auto !important;
  display: flex !important;
  flex-direction: column !important;
  gap: 16px !important;
  scroll-behavior: smooth !important;
}

.chat-msg {
  display: flex !important;
  gap: 8px !important;
  max-width: 85% !important;
  animation: fadeInMsg 0.3s ease forwards !important;
}

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

.chat-msg.user {
  align-self: flex-end !important;
  flex-direction: row-reverse !important;
}

.chat-msg.bot {
  align-self: flex-start !important;
}

.chat-bubble {
  padding: 10px 14px !important;
  border-radius: 14px !important;
  font-size: 13.5px !important;
  line-height: 1.5 !important;
  word-wrap: break-word !important;
}

.chat-msg.user .chat-bubble {
  background: var(--accent-color) !important;
  color: #fff !important;
  border-bottom-right-radius: 4px !important;
}

.chat-msg.bot .chat-bubble {
  background: var(--bg-tertiary) !important;
  color: var(--text-primary) !important;
  border-bottom-left-radius: 4px !important;
  border: 1px solid var(--border-color) !important;
}

.chat-typing {
  display: flex !important;
  gap: 4px !important;
  padding: 4px 8px !important;
}

.chat-typing span {
  width: 6px !important;
  height: 6px !important;
  background: var(--text-muted) !important;
  border-radius: 50% !important;
  animation: typingBounce 1.4s infinite ease-in-out both !important;
}

.chat-typing span:nth-child(1) { animation-delay: -0.32s !important; }
.chat-typing span:nth-child(2) { animation-delay: -0.16s !important; }

@keyframes typingBounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

.chatbot-input-area {
  padding: 16px !important;
  border-top: 1px solid var(--border-color) !important;
  background: var(--bg-secondary) !important;
  display: flex !important;
  gap: 10px !important;
}

.chatbot-input-area input {
  flex-grow: 1 !important;
  background: var(--bg-tertiary) !important;
  border: 1px solid var(--border-color) !important;
  padding: 10px 16px !important;
  border-radius: 20px !important;
  color: var(--text-primary) !important;
  font-size: 14px !important;
  outline: none !important;
  transition: border-color 0.3s !important;
}

.chatbot-input-area input:focus {
  border-color: var(--accent-color) !important;
}

.chatbot-input-area button {
  width: 40px !important;
  height: 40px !important;
  background: var(--accent-color) !important;
  color: #fff !important;
  border: none !important;
  border-radius: 50% !important;
  cursor: pointer !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  transition: transform 0.2s !important;
}

.chatbot-input-area button:hover {
  transform: scale(1.1) !important;
}

/* Mobile Adjustments for Chatbot */
@media (max-width: 480px) {
  .chatbot-window {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    max-height: 100vh !important;
    margin: 0 !important;
    border-radius: 0 !important;
    transform: translateY(100%) !important;
    transform-origin: center bottom !important;
  }
  
  .chatbot-container.open .chatbot-window {
    transform: translateY(0) !important;
  }
  
  .chatbot-container.open .chatbot-toggler {
    display: none !important; /* Hide floating button when full screen */
  }
  
  .chatbot-header {
    border-radius: 0 !important;
  }
}