/* ==================================================
   Wellness Nurse Hub – common.css
   Global styles, variables, utilities, and shared components
   ================================================== */

/* ----- CSS RESET (modern) ----- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ----- CUSTOM PROPERTIES (variables) ----- */
:root {
  /* Primary color palette – calming teal, wellness green, warm gold */
  --color-primary: #0f766e;        /* Calming Teal */
  --color-primary-light: #2b8c84;
  --color-primary-dark: #0a5c55;
  --color-secondary: #22c55e;       /* Wellness Green */
  --color-secondary-light: #4ade80;
  --color-secondary-dark: #16a34a;
  --color-accent: #f59e0b;          /* Warm Gold */
  --color-accent-light: #fbbf24;
  --color-accent-dark: #d97706;
  --color-neutral-light: #f8fafc;   /* Soft gray background */
  --color-neutral: #e2e8f0;
  --color-neutral-dark: #94a3b8;
  --color-text: #0f172a;            /* Deep slate */
  --color-text-light: #334155;
  --color-text-muted: #64748b;
  --color-white: #ffffff;
  --color-black: #020617;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;

  /* Typography scale – using clamp for fluid typography */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-size-xs: clamp(0.75rem, 0.7vw, 0.875rem);
  --font-size-sm: clamp(0.875rem, 0.8vw, 1rem);
  --font-size-base: clamp(1rem, 1vw, 1.125rem);
  --font-size-md: clamp(1.125rem, 1.2vw, 1.25rem);
  --font-size-lg: clamp(1.25rem, 1.5vw, 1.5rem);
  --font-size-xl: clamp(1.5rem, 2vw, 1.875rem);
  --font-size-2xl: clamp(1.875rem, 3vw, 2.25rem);
  --font-size-3xl: clamp(2.25rem, 4vw, 3rem);
  --font-size-4xl: clamp(3rem, 5vw, 3.75rem);
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-loose: 1.8;

  /* Spacing scale */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;

  /* Border radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
  --shadow-gold: 0 10px 15px -3px rgba(245, 158, 11, 0.2), 0 4px 6px -4px rgba(245, 158, 11, 0.1);
  --shadow-teal: 0 10px 15px -3px rgba(15, 118, 110, 0.2), 0 4px 6px -4px rgba(15, 118, 110, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-index scale */
  --z-below: -1;
  --z-normal: 1;
  --z-dropdown: 10;
  --z-sticky: 100;
  --z-modal: 1000;
  --z-popover: 1010;
  --z-toast: 1100;
}

/* ----- BASE STYLES ----- */
html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-neutral-light);
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ----- TYPOGRAPHY ----- */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-md); }

p {
  margin-bottom: var(--spacing-4);
  color: var(--color-text-light);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

strong, b {
  font-weight: var(--font-weight-bold);
}

small {
  font-size: var(--font-size-sm);
}

/* ----- LISTS ----- */
ul, ol {
  margin-bottom: var(--spacing-4);
  padding-left: var(--spacing-6);
}
li {
  margin-bottom: var(--spacing-2);
}

/* ----- IMAGES & MEDIA ----- */
img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ----- FORMS ----- */
input, textarea, select, button {
  font: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

fieldset {
  border: none;
  padding: 0;
  margin: 0;
}

label {
  display: inline-block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-2);
  color: var(--color-text);
}

input:not([type="checkbox"]):not([type="radio"]),
textarea,
select {
  width: 100%;
  padding: var(--spacing-4) var(--spacing-6);
  background-color: var(--color-white);
  border: 2px solid var(--color-neutral);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.1);
  outline: none;
}
input.error,
textarea.error,
select.error {
  border-color: var(--color-error);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

::placeholder {
  color: var(--color-neutral-dark);
  opacity: 1;
}

/* Custom checkbox/radio */
input[type="checkbox"],
input[type="radio"] {
  width: auto;
  margin-right: var(--spacing-2);
  accent-color: var(--color-primary);
}

/* ----- BUTTONS ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4) var(--spacing-8);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-base);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-teal);
}
.btn--primary:hover:not(:disabled) {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
  color: var(--color-white);
}
.btn--secondary {
  background-color: var(--color-secondary);
  color: var(--color-text);
}
.btn--secondary:hover:not(:disabled) {
  background-color: var(--color-secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.btn--accent {
  background-color: var(--color-accent);
  color: var(--color-text);
}
.btn--accent:hover:not(:disabled) {
  background-color: var(--color-accent-dark);
  transform: translateY(-2px);
}
.btn--outline {
  background-color: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}
.btn--outline:hover:not(:disabled) {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}
.btn--white {
  background-color: var(--color-white);
  color: var(--color-primary);
}
.btn--white:hover:not(:disabled) {
  background-color: var(--color-neutral-light);
}
.btn--block {
  width: 100%;
  display: flex;
}
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ----- CONTAINER & LAYOUT UTILITIES ----- */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}
.container--narrow {
  max-width: 768px;
}
.container--wide {
  max-width: 1440px;
}

/* Grid system */
.grid {
  display: grid;
  gap: var(--spacing-8);
}
.grid--2cols {
  grid-template-columns: repeat(2, 1fr);
}
.grid--3cols {
  grid-template-columns: repeat(3, 1fr);
}
.grid--4cols {
  grid-template-columns: repeat(4, 1fr);
}
.grid--5cols {
  grid-template-columns: repeat(5, 1fr);
}
.grid--6cols {
  grid-template-columns: repeat(6, 1fr);
}
@media (max-width: 1024px) {
  .grid--4cols, .grid--5cols, .grid--6cols {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 768px) {
  .grid--2cols, .grid--3cols, .grid--4cols, .grid--5cols, .grid--6cols {
    grid-template-columns: 1fr;
  }
}

/* Flex utilities */
.flex {
  display: flex;
}
.flex-col {
  flex-direction: column;
}
.items-center {
  align-items: center;
}
.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.gap-1 { gap: var(--spacing-1); }
.gap-2 { gap: var(--spacing-2); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }
.gap-8 { gap: var(--spacing-8); }

/* Spacing utilities */
.m-0 { margin: 0; }
.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }
.mt-10 { margin-top: var(--spacing-10); }
.mt-12 { margin-top: var(--spacing-12); }
.mt-16 { margin-top: var(--spacing-16); }
.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }
.mb-10 { margin-bottom: var(--spacing-10); }
.mb-12 { margin-bottom: var(--spacing-12); }
.mb-16 { margin-bottom: var(--spacing-16); }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }
.mx-auto { margin-left: auto; margin-right: auto; }

.p-0 { padding: 0; }
.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }
.p-10 { padding: var(--spacing-10); }
.p-12 { padding: var(--spacing-12); }
.py-4 { padding-top: var(--spacing-4); padding-bottom: var(--spacing-4); }
.py-6 { padding-top: var(--spacing-6); padding-bottom: var(--spacing-6); }
.py-8 { padding-top: var(--spacing-8); padding-bottom: var(--spacing-8); }
.py-10 { padding-top: var(--spacing-10); padding-bottom: var(--spacing-10); }
.py-12 { padding-top: var(--spacing-12); padding-bottom: var(--spacing-12); }
.py-16 { padding-top: var(--spacing-16); padding-bottom: var(--spacing-16); }
.px-4 { padding-left: var(--spacing-4); padding-right: var(--spacing-4); }
.px-6 { padding-left: var(--spacing-6); padding-right: var(--spacing-6); }
.px-8 { padding-left: var(--spacing-8); padding-right: var(--spacing-8); }

/* Text utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-accent { color: var(--color-accent); }
.text-white { color: var(--color-white); }
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.font-bold { font-weight: var(--font-weight-bold); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-medium { font-weight: var(--font-weight-medium); }

/* Background utilities */
.bg-primary { background-color: var(--color-primary); }
.bg-secondary { background-color: var(--color-secondary); }
.bg-accent { background-color: var(--color-accent); }
.bg-light { background-color: var(--color-neutral-light); }
.bg-white { background-color: var(--color-white); }
.bg-gradient-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}
.bg-gradient-accent {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-gold) 100%);
}

/* ----- HEADER & NAVIGATION (shared) ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-base);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}
.logo {
  display: flex;
  align-items: center;
}
.logo img {
  max-height: 70px;
  width: auto;
}
.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}
.nav__list {
  display: flex;
  gap: var(--spacing-6);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__link {
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  position: relative;
  padding-bottom: var(--spacing-1);
}
.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
  border-radius: var(--radius-full);
}
.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}
.nav__link:hover {
  text-decoration: none;
  color: var(--color-primary);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}
.menu-toggle span {
  width: 100%;
  height: 3px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}
.menu-toggle.active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  .nav {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-8);
    box-shadow: var(--shadow-lg);
    transform: translateY(-150%);
    transition: transform var(--transition-base);
    z-index: var(--z-dropdown);
  }
  .nav.active {
    transform: translateY(0);
  }
  .nav__list {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
  }
  .nav__social {
    margin-top: var(--spacing-4);
  }
}

/* Social icons */
.social-links {
  display: flex;
  gap: var(--spacing-4);
}
.social-links a {
  color: var(--color-text);
  font-size: 1.5rem;
  transition: color var(--transition-fast), transform var(--transition-fast);
}
.social-links a:hover {
  color: var(--color-primary);
  transform: scale(1.2);
}

/* ----- FOOTER (shared) ----- */
.site-footer {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
  padding: var(--spacing-16) 0 var(--spacing-8);
  margin-top: auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-12);
}
.footer-logo img {
  max-height: 70px;
  background: var(--color-white);
  border-radius: var(--radius-sm);
  padding: var(--spacing-2);
  margin-bottom: var(--spacing-4);
}
.footer-about p {
  color: rgba(255,255,255,0.8);
}
.footer-links h4,
.footer-contact h4,
.footer-social h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
  font-size: var(--font-size-lg);
}
.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: var(--spacing-2);
}
.footer-links a {
  color: rgba(255,255,255,0.8);
  transition: color var(--transition-fast);
}
.footer-links a:hover {
  color: var(--color-accent);
  text-decoration: none;
}
.footer-contact p {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  color: rgba(255,255,255,0.8);
}
.footer-contact i {
  color: var(--color-accent);
  width: 20px;
}
.footer-social .social-links a {
  color: var(--color-white);
  background-color: rgba(255,255,255,0.1);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}
.footer-social .social-links a:hover {
  background-color: var(--color-accent);
  color: var(--color-text);
  transform: translateY(-3px);
}
.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-8);
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.6);
  font-size: var(--font-size-sm);
}

/* ----- CARDS & SECTIONS ----- */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}
.card__image {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--spacing-4);
}
.card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-2);
}
.card__text {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-4);
  flex-grow: 1;
}
.card__link {
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  transition: gap var(--transition-fast);
}
.card__link:hover {
  gap: var(--spacing-2);
  text-decoration: none;
  color: var(--color-primary-dark);
}

/* Section padding */
.section {
  padding: var(--spacing-16) 0;
}
.section--sm {
  padding: var(--spacing-8) 0;
}
.section--lg {
  padding: var(--spacing-24) 0;
}
.section-title {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-12);
}
.section-title h2 {
  margin-bottom: var(--spacing-4);
}
.section-title p {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
}

/* ----- ANIMATIONS ----- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slideUp {
  from {
    transform: translateY(30px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}
@keyframes slideInLeft {
  from {
    transform: translateX(-30px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}
@keyframes slideInRight {
  from {
    transform: translateX(30px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.animate-fadeIn {
  animation: fadeIn 1s ease forwards;
}
.animate-slideUp {
  animation: slideUp 0.8s ease forwards;
}
.animate-slideInLeft {
  animation: slideInLeft 0.8s ease forwards;
}
.animate-slideInRight {
  animation: slideInRight 0.8s ease forwards;
}
.animate-pulse {
  animation: pulse 2s infinite;
}
.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* ----- UTILITIES (helpers) ----- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}
.hidden {
  display: none !important;
}
.rounded { border-radius: var(--radius-md); }
.rounded-full { border-radius: var(--radius-full); }
.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-none { box-shadow: none; }
.overflow-hidden { overflow: hidden; }
.object-cover { object-fit: cover; }
.object-contain { object-fit: contain; }


/* ----- CUSTOM SCROLLBAR ----- */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-neutral);
}
::-webkit-scrollbar-thumb {
  background: var(--color-primary);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary-dark);
}

/* ----- PRINT STYLES ----- */
@media print {
  .site-header,
  .site-footer,
  .btn,
  .social-links {
    display: none;
  }
  body {
    background: white;
    color: black;
  }
  a {
    text-decoration: underline;
    color: black;
  }
}

/* ----- MEDIA QUERIES (extra responsive) ----- */
@media (max-width: 480px) {
  :root {
    --spacing-16: 3rem;
    --spacing-24: 4rem;
  }
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  .container {
    padding: 0 var(--spacing-4);
  }
}
@media (min-width: 1440px) {
  .container {
    max-width: 1400px;
  }
}

/* ----- ACCESSIBILITY (focus) ----- */
:focus-visible {
  outline: 4px solid var(--color-accent);
  outline-offset: 2px;
}

html, body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}