/*
  Project: FitTrack - Developed by Nhom 9
*/

html {
  scroll-behavior: smooth;
}

html,
body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

img,
video {
  max-width: 100%;
}

:root {
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Primary HSL color palette - Neon Teal (Student Dashboard) */
  --color-primary-hue: 160;
  --color-primary: hsl(var(--color-primary-hue), 85%, 43%);
  --color-primary-glow: hsla(var(--color-primary-hue), 85%, 43%, 0.3);
  --color-primary-dark: hsl(var(--color-primary-hue), 90%, 30%);
  
  /* Admin HSL color palette - Royal Indigo (Admin Panel) */
  --color-admin-hue: 224;
  --color-admin: hsl(var(--color-admin-hue), 85%, 60%);
  --color-admin-glow: hsla(var(--color-admin-hue), 85%, 60%, 0.25);
  
  /* Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: var(--font-body);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

h1, h2, h3, h4, h5, h6, .display-font {
  font-family: var(--font-heading);
  font-weight: 700;
}

/* ==========================================
   GLASSMORPHISM CARD STYLES
   ========================================== */
.glass-card {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  backdrop-filter: blur(16px);
  transition: var(--transition-smooth);
}

[data-bs-theme="light"] .glass-card {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
}

[data-bs-theme="dark"] .glass-card {
  background: rgba(20, 26, 38, 0.65);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.glass-card:not(.navbar):hover {
  border-color: var(--color-primary);
  box-shadow: 0 12px 40px var(--color-primary-glow);
}

/* Hover border highlight for admin page cards */
body:has(#exercises-pane) .glass-card:not(.navbar):hover {
  border-color: var(--color-admin);
  box-shadow: 0 12px 40px var(--color-admin-glow);
}

/* ==========================================
   BUTTONS WITH DYNAMIC GRADIENTS
   ========================================== */
.btn-gradient {
  background: linear-gradient(135deg, var(--color-primary), hsl(180, 85%, 40%));
  color: #051610 !important;
  border: none;
  font-weight: 600;
  letter-spacing: 0.3px;
  transition: var(--transition-smooth);
  border-radius: 10px;
}

.btn-gradient:hover {
  box-shadow: 0 0 20px var(--color-primary-glow);
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-indigo {
  background: linear-gradient(135deg, var(--color-admin), hsl(245, 85%, 65%));
  color: #fff !important;
  border: none;
  font-weight: 600;
  letter-spacing: 0.3px;
  transition: var(--transition-smooth);
  border-radius: 10px;
}

.btn-indigo:hover {
  box-shadow: 0 0 20px var(--color-admin-glow);
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.split-action {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  width: 100%;
}

.split-action .btn {
  min-height: 46px;
}

.split-action .btn-icon {
  width: 48px;
  padding-left: 0;
  padding-right: 0;
  font-size: 1.05rem;
}

/* ==========================================
   COPYRIGHT BADGE CHIPS
   ========================================== */
.copyright-badge {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.8rem;
  padding: 0.35rem 0.8rem;
  border-radius: 30px;
  letter-spacing: 0.5px;
  font-weight: 500;
  color: var(--color-primary);
}

[data-bs-theme="light"] .copyright-badge {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.1);
  color: var(--color-primary-dark);
}

body:has(#exercises-pane) .copyright-badge {
  color: var(--color-admin);
}

[data-bs-theme="light"] body:has(#exercises-pane) .copyright-badge {
  color: hsl(var(--color-admin-hue), 85%, 40%);
}

/* ==========================================
   GLOBAL LOADING SCREEN OVERLAYS
   ========================================== */
#globalSpinner {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(10, 14, 23, 0.85);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.3s ease;
}

[data-bs-theme="light"] #globalSpinner {
  background: rgba(255, 255, 255, 0.85);
}

/* ==========================================
   CSS PROGRESS BAR VERTICAL CHART
   ========================================== */
.chart-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  height: 250px;
  padding-top: 30px;
  gap: 12px;
  position: relative;
}

.chart-column {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  justify-content: flex-end;
}

.chart-bar-outer {
  width: 100%;
  max-width: 32px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 20px;
  height: 170px;
  display: flex;
  align-items: flex-end;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.03);
  transition: var(--transition-smooth);
}

[data-bs-theme="light"] .chart-bar-outer {
  background: rgba(0, 0, 0, 0.05);
  border-color: rgba(0, 0, 0, 0.02);
}

.chart-bar-inner {
  width: 100%;
  height: 0%; /* Scaled dynamically in JS */
  background: linear-gradient(to top, var(--color-primary), hsl(180, 85%, 45%));
  border-radius: 20px;
  transition: height 1s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.chart-column:hover .chart-bar-outer {
  transform: scaleY(1.03);
  border-color: var(--color-primary);
  box-shadow: 0 4px 15px var(--color-primary-glow);
}

.chart-tooltip {
  position: absolute;
  top: -30px;
  background: #000;
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
  white-space: nowrap;
  transform: translateY(5px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.3);
  z-index: 10;
}

.chart-column:hover .chart-tooltip {
  opacity: 1;
  transform: translateY(0);
}

.chart-label {
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 8px;
  opacity: 0.8;
  text-transform: uppercase;
}

/* ==========================================
   KEYFRAME TRANSITIONS & BADGES
   ========================================== */
@keyframes slideIn {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.animate-slide-in {
  animation: slideIn 0.3s forwards;
}

.stat-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-primary-glow);
  color: var(--color-primary);
  font-size: 1.5rem;
}

/* Footer layout */
footer {
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.9rem;
  background: rgba(10, 14, 23, 0.4);
}

[data-bs-theme="light"] footer {
  border-top-color: rgba(0,0,0,0.06);
  background: rgba(240, 240, 240, 0.5);
}

/* ==========================================
   PORTAL NAVIGATION & ACCORDION CUSTOMS
   ========================================== */
.navbar-nav .nav-link {
  opacity: 0.75;
  transition: var(--transition-smooth);
  white-space: nowrap;
}

.navbar .container {
  max-width: 100%;
  gap: clamp(8px, 0.7vw, 14px);
  padding-left: clamp(12px, 2.2vw, 44px);
  padding-right: clamp(12px, 2.2vw, 44px);
}

.navbar .navbar-collapse {
  min-width: 0;
  flex: 1 1 auto;
}

.navbar-nav {
  flex-wrap: nowrap;
}

.navbar-collapse > .navbar-nav.me-auto {
  flex: 1 1 auto;
  justify-content: center;
  min-width: 0;
  gap: clamp(0.2rem, 0.45vw, 0.7rem) !important;
}

.navbar-collapse > .navbar-nav.me-auto .nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0.45rem clamp(0.3rem, 0.45vw, 0.65rem) !important;
  font-size: 1rem;
  line-height: 1.15;
  transform: none !important;
}

.navbar-collapse > .navbar-nav.me-auto .nav-link:hover,
.navbar-collapse > .navbar-nav.me-auto .nav-link:focus,
.navbar-collapse > .navbar-nav.me-auto .nav-link.active {
  font-size: 1rem;
  opacity: 1 !important;
  transform: none !important;
}

.navbar-brand {
  flex: 0 0 auto;
  white-space: nowrap;
}

.copyright-badge {
  display: inline-block;
  max-width: clamp(160px, 18vw, 340px);
  overflow: hidden;
  text-overflow: ellipsis;
  vertical-align: middle;
  white-space: nowrap;
}

.navbar-collapse > .navbar-nav.ms-auto {
  flex: 0 0 auto;
  gap: clamp(0.35rem, 0.5vw, 0.75rem) !important;
}

#guestActions {
  gap: 0.45rem !important;
}

#guestActions .btn,
#userProfileWidget .btn {
  white-space: nowrap;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 1040;
  backdrop-filter: blur(18px);
}

.navbar-nav .nav-link:hover {
  opacity: 1;
  color: var(--color-primary) !important;
}

.accordion-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
}

[data-bs-theme="light"] .accordion-item {
  border-bottom-color: rgba(0, 0, 0, 0.06) !important;
}

.accordion-button::after {
  filter: invert(0.5);
}

[data-bs-theme="light"] .accordion-button::after {
  filter: none;
}

/* ==========================================
   ADMIN WORKSPACE
   ========================================== */
#adminTabs {
  gap: 8px;
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

#adminTabs .nav-link {
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 8px;
  color: var(--color-text-muted) !important;
  background: rgba(148, 163, 184, 0.06);
}

#adminTabs .nav-link.active,
#adminTabs .nav-link:hover {
  color: var(--color-primary) !important;
  border-color: rgba(16, 185, 129, 0.45);
  background: rgba(16, 185, 129, 0.1);
}

#adminModuleOverview .card,
#adminRecentRequests .btn,
#adminLinkAuditList > div > div {
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

#adminModuleOverview .card:hover,
#adminRecentRequests .btn:hover {
  transform: translateY(-2px);
  border-color: rgba(16, 185, 129, 0.45) !important;
}

@media (max-width: 768px) {
  #adminTabs .nav-item,
  #adminTabs .nav-link {
    width: 100%;
  }
}

@media (max-width: 1199.98px) {
  .navbar-expand-lg > .container {
    flex-wrap: wrap;
  }

  .navbar-expand-lg .navbar-toggler {
    display: block;
  }

  .navbar-expand-lg .navbar-collapse {
    display: none !important;
    flex-basis: 100%;
    width: 100%;
  }

  .navbar-expand-lg .navbar-collapse.show {
    display: block !important;
  }

  .navbar-expand-lg .navbar-nav {
    flex-direction: column;
  }

  .navbar-collapse > .navbar-nav.me-auto {
    margin-left: 0 !important;
    margin-top: 1rem;
    align-items: stretch;
  }

  .navbar-collapse > .navbar-nav.me-auto .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 0.65rem 0.75rem !important;
  }

  .navbar-collapse > .navbar-nav.ms-auto {
    margin-left: 0 !important;
    margin-top: 0.75rem !important;
    align-items: stretch !important;
  }

  .navbar .container {
    gap: 10px;
  }

  .navbar-brand .fs-4 {
    font-size: 1.4rem !important;
  }

  .copyright-badge {
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .navbar-collapse > .navbar-nav.me-auto .nav-link {
    font-size: 1rem;
    padding-left: 0.35rem !important;
    padding-right: 0.35rem !important;
  }

  .navbar-collapse > .navbar-nav.me-auto .nav-link:hover,
  .navbar-collapse > .navbar-nav.me-auto .nav-link:focus,
  .navbar-collapse > .navbar-nav.me-auto .nav-link.active {
    font-size: 1rem;
  }

  #guestActions .btn {
    padding-left: 0.65rem !important;
    padding-right: 0.65rem !important;
  }

  #userProfileWidget {
    gap: 0.5rem !important;
  }

  #userProfileWidget .btn {
    padding-left: 0.75rem !important;
    padding-right: 0.75rem !important;
  }
}

@media (min-width: 1200px) and (max-width: 1399.98px) {
  .navbar > .container > .d-none.d-md-flex {
    display: none !important;
  }
}

@media (max-width: 991.98px) {
  .navbar-nav {
    flex-wrap: nowrap;
  }

  .navbar-collapse > .navbar-nav.me-auto {
    gap: 0.35rem !important;
    margin-left: 0 !important;
    margin-top: 1rem;
  }

  .navbar-collapse > .navbar-nav.me-auto .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 0.65rem 0.75rem !important;
    font-size: 1rem;
    border-radius: 10px;
  }

  .navbar-collapse > .navbar-nav.me-auto .nav-link:hover,
  .navbar-collapse > .navbar-nav.me-auto .nav-link:focus,
  .navbar-collapse > .navbar-nav.me-auto .nav-link.active {
    font-size: 1rem;
  }

  .navbar-collapse > .navbar-nav:last-child {
    align-items: stretch !important;
    gap: 0.6rem !important;
  }

  .copyright-badge {
    max-width: min(100%, 320px);
  }
}

@media (max-width: 575.98px) {
  .navbar .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .navbar-brand .fs-4 {
    font-size: 1.45rem !important;
  }

  .copyright-badge {
    font-size: 0.72rem;
    padding-left: 0.65rem;
    padding-right: 0.65rem;
  }
}

/* ==========================================
   HOME PROMO & SETTINGS POLISH
   ========================================== */
.home-promo-slide {
  min-height: 430px;
  background-position: center;
  background-size: cover;
  display: flex;
  align-items: center;
  padding: clamp(28px, 6vw, 72px);
  position: relative;
  isolation: isolate;
}

.home-promo-copy {
  max-width: 640px;
  position: relative;
  z-index: 2;
  padding-right: 44px;
}

.home-promo-copy .lead {
  color: rgba(255, 255, 255, 0.82);
}

.home-promo-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.home-promo-points span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  padding: 7px 12px;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(15, 23, 42, 0.52);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(8px);
  font-size: 0.88rem;
  font-weight: 700;
}

.home-promo-points i {
  color: var(--color-primary);
}

#homePromoCarousel .carousel-control-prev,
#homePromoCarousel .carousel-control-next {
  width: 9%;
  z-index: 3;
}

#homePromoCarousel .carousel-indicators {
  z-index: 4;
}

.home-promo-cta {
  position: relative;
  z-index: 5;
}

.home-mini-stat {
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 8px;
  padding: 16px;
  background: rgba(148, 163, 184, 0.06);
}

.home-photo-mosaic {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  grid-template-rows: repeat(2, 190px);
  gap: 14px;
}

.home-photo-mosaic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.home-photo-mosaic .home-photo-main {
  grid-row: span 2;
}

.home-action-tile {
  display: block;
  height: 100%;
  color: inherit;
  text-decoration: none;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 8px;
  background: rgba(148, 163, 184, 0.06);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.home-action-tile:hover {
  color: inherit;
  transform: translateY(-3px);
  border-color: rgba(16, 185, 129, 0.45);
}

.home-action-tile img {
  width: 100%;
  height: 170px;
  object-fit: cover;
}

.home-action-tile > div {
  padding: 18px;
}

.home-action-tile i {
  font-size: 1.5rem;
}

.home-action-tile h5 {
  margin: 10px 0 6px;
  font-weight: 800;
}

.home-action-tile p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.home-wide-cta {
  min-height: 360px;
  display: flex;
  align-items: center;
  border-radius: 8px;
  overflow: hidden;
  padding: clamp(28px, 6vw, 68px);
  background-image: linear-gradient(90deg, rgba(3, 7, 18, 0.88), rgba(3, 7, 18, 0.35)), url("https://images.unsplash.com/photo-1549060279-7e168fcee0c2?auto=format&fit=crop&w=1400&q=80");
  background-size: cover;
  background-position: center;
}

.home-wide-cta > div {
  max-width: 650px;
}

.home-wide-cta h2,
.home-wide-cta p {
  color: #fff;
}

#settingsModal .modal-content {
  border: 1px solid rgba(16, 185, 129, 0.25);
}

#settingsModal .modal-header {
  background: rgba(16, 185, 129, 0.08);
}

#settingsModal .form-control,
#settingsModal .form-select {
  min-height: 44px;
}

#settingsPackageSection {
  border-radius: 8px;
  padding: 16px;
  background: rgba(16, 185, 129, 0.07);
}

/* ==========================================
   WORKOUT JOURNAL PAGE
   ========================================== */
.workout-page {
  scroll-margin-top: 96px;
}

.workout-hero {
  position: relative;
  isolation: isolate;
}

.workout-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(16, 185, 129, 0.16), transparent 42%),
    linear-gradient(300deg, rgba(14, 165, 233, 0.12), transparent 48%);
  pointer-events: none;
  z-index: -1;
}

.workout-hero-panel {
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.72), rgba(16, 185, 129, 0.08)),
    url("https://images.unsplash.com/photo-1517963628607-235ccdd5476c?auto=format&fit=crop&w=900&q=80") center/cover;
  min-height: 340px;
}

.workout-flow-item,
.workout-tip {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 8px;
  background: rgba(15, 23, 42, 0.56);
  backdrop-filter: blur(8px);
}

.workout-flow-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  flex: 0 0 42px;
  font-size: 1.2rem;
}

.workout-stat-card {
  min-height: 176px;
}

.workout-week-chart {
  height: 280px;
  padding-left: 8px;
  padding-right: 8px;
}

.workout-tip i {
  font-size: 1.25rem;
  line-height: 1.4;
  flex: 0 0 24px;
}

.workout-table-wrap {
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 8px;
  overflow: hidden;
}

.workout-table thead th {
  background: rgba(148, 163, 184, 0.08);
  color: var(--bs-body-color);
  border-bottom-color: rgba(148, 163, 184, 0.18);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0;
  white-space: nowrap;
}

.workout-table tbody td {
  border-color: rgba(148, 163, 184, 0.12);
}

[data-bs-theme="light"] .workout-flow-item,
[data-bs-theme="light"] .workout-tip {
  background: rgba(255, 255, 255, 0.78);
}

[data-bs-theme="light"] .workout-hero-panel {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.82), rgba(16, 185, 129, 0.12)),
    url("https://images.unsplash.com/photo-1517963628607-235ccdd5476c?auto=format&fit=crop&w=900&q=80") center/cover;
}

@media (max-width: 768px) {
  .home-promo-slide {
    min-height: 520px;
    align-items: end;
  }

  .home-photo-mosaic {
    grid-template-columns: 1fr;
    grid-template-rows: none;
  }

  .home-photo-mosaic .home-photo-main {
    grid-row: auto;
  }

  .home-photo-mosaic img {
    height: 220px;
  }
}