/* ==========================================================
   ARTS STUDY CIRCLE — Global Design Tokens & Base Styles
   ========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&display=swap');

:root {
  /* ---- Primary Blue Palette ---- */
  --blue-900: #0b1d51;
  --blue-800: #0d2a6e;
  --blue-700: #10369a;
  --blue-600: #1a4fd0;
  --blue-500: #2563eb;
  --blue-400: #3b82f6;
  --blue-300: #60a5fa;
  --blue-200: #93c5fd;
  --blue-100: #dbeafe;
  --blue-50:  #eff6ff;

  /* ---- Yellow / Gold Palette ---- */
  --yellow-900: #78350f;
  --yellow-800: #92400e;
  --yellow-700: #b45309;
  --yellow-600: #d97706;
  --yellow-500: #f59e0b;
  --yellow-400: #fbbf24;
  --yellow-300: #fcd34d;
  --yellow-200: #fde68a;
  --yellow-100: #fef3c7;
  --yellow-50:  #fffbeb;

  /* ---- Neutrals ---- */
  --dark:      #0f172a;
  --gray-900:  #111827;
  --gray-800:  #1f2937;
  --gray-700:  #374151;
  --gray-600:  #4b5563;
  --gray-500:  #6b7280;
  --gray-400:  #9ca3af;
  --gray-300:  #d1d5db;
  --gray-200:  #e5e7eb;
  --gray-100:  #f3f4f6;
  --gray-50:   #f9fafb;
  --white:     #ffffff;

  /* ---- Gradients ---- */
  --grad-blue:        linear-gradient(135deg, var(--blue-800) 0%, var(--blue-500) 100%);
  --grad-yellow:      linear-gradient(135deg, var(--yellow-600) 0%, var(--yellow-400) 100%);
  --grad-blue-yellow: linear-gradient(135deg, var(--blue-700) 0%, var(--yellow-500) 100%);
  --grad-dark:        linear-gradient(135deg, var(--dark) 0%, var(--blue-900) 100%);
  --grad-hero:        linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 50%, var(--yellow-600) 100%);

  /* ---- Shadows ---- */
  --shadow-sm:   0 1px 3px rgba(0,0,0,.08);
  --shadow-md:   0 4px 12px rgba(0,0,0,.1);
  --shadow-lg:   0 10px 30px rgba(0,0,0,.12);
  --shadow-xl:   0 20px 40px rgba(0,0,0,.15);
  --shadow-blue: 0 8px 24px rgba(26,79,208,.35);
  --shadow-gold: 0 8px 24px rgba(245,158,11,.30);

  /* ---- Radius ---- */
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-pill: 50px;
  --radius-full: 50%;

  /* ---- Transitions ---- */
  --ease-fast:   all .2s ease;
  --ease-normal: all .35s ease;
  --ease-slow:   all .5s ease;

  /* ---- Typography ---- */
  --font: 'Outfit', sans-serif;
}

/* ========================  RESET  ======================== */
*,
*::before,
*::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font);
  font-weight: 400;
  color: var(--gray-700);
  line-height: 1.75;
  background: var(--white);
  overflow-x: hidden;
}

h1,h2,h3,h4,h5,h6 {
  font-family: var(--font);
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
}

a { text-decoration: none; color: inherit; transition: var(--ease-normal); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ==================  UTILITY CLASSES  ================== */

.section-padding { padding: 90px 0; }

.section-title {
  text-align: center;
  margin-bottom: 55px;
}
.section-title h2 {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--blue-800);
  position: relative;
  display: inline-block;
  margin-bottom: 12px;
}
.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  border-radius: 2px;
  background: var(--grad-yellow);
}
.section-title p {
  color: var(--gray-500);
  font-size: 1.05rem;
  max-width: 620px;
  margin: 18px auto 0;
}

/* ---- Buttons ---- */
.btn-blue {
  background: var(--grad-blue);
  color: var(--white);
  border: none;
  padding: 13px 34px;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-weight: 600;
  font-size: .95rem;
  transition: var(--ease-normal);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.btn-blue:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-blue);
  color: var(--white);
}

.btn-yellow {
  background: var(--grad-yellow);
  color: var(--dark);
  border: none;
  padding: 13px 34px;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-weight: 600;
  font-size: .95rem;
  transition: var(--ease-normal);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.btn-yellow:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-gold);
  color: var(--dark);
}

.btn-outline {
  background: transparent;
  color: var(--blue-700);
  border: 2px solid var(--blue-700);
  padding: 11px 32px;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-weight: 600;
  font-size: .95rem;
  transition: var(--ease-normal);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.btn-outline:hover {
  background: var(--blue-700);
  color: var(--white);
  transform: translateY(-3px);
  box-shadow: var(--shadow-blue);
}

.btn-white {
  background: var(--white);
  color: var(--blue-800);
  border: none;
  padding: 13px 34px;
  border-radius: var(--radius-md);
  font-family: var(--font);
  font-weight: 600;
  font-size: .95rem;
  transition: var(--ease-normal);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.btn-white:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  color: var(--blue-800);
}

/* ---- Animations ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.05); }
}