/* ============================================================
   DESIGN SYSTEM — Subhvaishali Foundation
   Single source of truth for all design tokens
   ============================================================ */

/* ── LIGHT MODE TOKENS ── */
:root {
  /* ── BRAND COLORS ── */
  --clr-primary:        #ff6a00;
  --clr-primary-light:  #ff9440;
  --clr-primary-dark:   #e05500;
  --clr-primary-bg:     #fff4eb;
  --clr-primary-glow:   rgba(255,106,0,0.18);
  --clr-primary-border: rgba(255,120,0,0.20);

  /* ── GRADIENTS ── */
  --grad-primary: linear-gradient(90deg, #ff6a00, #ff9440);
  --grad-hero:    linear-gradient(135deg, #fff4eb 0%, #ffe1c7 60%, #ffd4b0 100%);
  --grad-warm:    linear-gradient(135deg, #fffaf5, #ffe8d2);
  --grad-dark:    linear-gradient(135deg, #1a0800, #3d1200);

  /* ── NEUTRAL COLORS ── */
  --clr-bg:      #ffffff;
  --clr-surface: #ffffff;
  --clr-text:    #1a1a1a;
  --clr-text-2:  #444444;
  --clr-text-3:  #666666;
  --clr-muted:   #888888;
  --clr-border:  #f0e0d0;

  /* ── STATUS COLORS ── */
  --clr-success:    #16a34a;
  --clr-success-bg: #dcfce7;
  --clr-error:      #dc2626;
  --clr-error-bg:   #fee2e2;
  --clr-warning:    #d97706;
  --clr-warning-bg: #fef3c7;
  --clr-info:       #1d4ed8;
  --clr-info-bg:    #dbeafe;

  /* ── SPACING SCALE ── */
  --sp-1:  4px;
  --sp-2:  8px;
  --sp-3:  12px;
  --sp-4:  16px;
  --sp-5:  20px;
  --sp-6:  24px;
  --sp-8:  32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sp-16: 64px;
  --sp-20: 80px;

  /* ── BORDER RADIUS ── */
  --r-sm:   8px;
  --r-md:   12px;
  --r-lg:   18px;
  --r-xl:   24px;
  --r-2xl:  32px;
  --r-full: 999px;

  /* ── SHADOWS ── */
  --shadow-sm:  0 2px 8px rgba(255,106,0,0.08);
  --shadow-md:  0 6px 20px rgba(255,106,0,0.12);
  --shadow-lg:  0 12px 36px rgba(255,106,0,0.18);
  --shadow-xl:  0 20px 56px rgba(255,106,0,0.24);
  --shadow-btn: 0 8px 22px rgba(255,106,0,0.32);

  /* ── TYPOGRAPHY ── */
  --font-base: "Inter", "Segoe UI", sans-serif;
  --text-xs:   11px;
  --text-sm:   13px;
  --text-base: 15px;
  --text-md:   17px;
  --text-lg:   20px;
  --text-xl:   24px;
  --text-2xl:  30px;
  --text-3xl:  38px;
  --text-4xl:  46px;

  /* ── TRANSITIONS ── */
  --ease-smooth: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-fast:   0.15s;
  --t-base:   0.28s;
  --t-slow:   0.5s;
  --t-reveal: 0.7s;

  /* ── Z-INDEX SCALE ── */
  --z-base:     1;
  --z-card:     10;
  --z-dropdown: 100;
  --z-modal:    200;
  --z-nav:      9998;
  --z-header:   9999;
  --z-toast:    10000;
}

/* ── GLOBAL BASE ── */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-base, "Inter", sans-serif);
  background: #ffffff;
  color: #1a1a1a;
  overflow-x: hidden;
  line-height: 1.6;
  -webkit-tap-highlight-color: transparent;
}

img { max-width: 100%; display: block; height: auto; }
a   { text-decoration: none; color: inherit; }

::selection {
  background: rgba(255,106,0,0.20);
  color: var(--clr-primary, #ff6a00);
}

:focus-visible {
  outline: 3px solid var(--clr-primary, #ff6a00);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ── SKIP LINK (accessibility) ── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--sp-4, 16px);
  background: var(--clr-primary, #ff6a00);
  color: #fff;
  padding: var(--sp-2, 8px) var(--sp-4, 16px);
  border-radius: var(--r-md, 12px);
  font-weight: 700;
  font-size: var(--text-sm, 13px);
  z-index: var(--z-toast, 10000);
  transition: top 0.2s;
}
.skip-link:focus { top: var(--sp-4, 16px); }

/* ============================================================
   TYPOGRAPHY SYSTEM
   ============================================================ */

h1 {
  font-size: clamp(26px, 5vw, 46px);
  font-weight: 900;
  line-height: 1.2;
  color: var(--clr-primary, #ff6a00);
}
h2 {
  font-size: clamp(22px, 4vw, 36px);
  font-weight: 900;
  line-height: 1.3;
  color: var(--clr-text, #1a1a1a);
}
h3 {
  font-size: clamp(18px, 3vw, 24px);
  font-weight: 800;
  line-height: 1.4;
  color: var(--clr-text, #1a1a1a);
}
h4 {
  font-size: clamp(16px, 2.5vw, 20px);
  font-weight: 700;
  color: var(--clr-text, #1a1a1a);
}
p {
  font-size: var(--text-base, 15px);
  line-height: 1.75;
  color: var(--clr-text-2, #444);
}

.text-gradient {
  background: var(--grad-primary, linear-gradient(90deg,#ff6a00,#ff9440));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

h2.grad, .grad-h2 {
  background: var(--grad-primary, linear-gradient(90deg,#ff6a00,#ff9440));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.kicker {
  font-size: var(--text-xs, 11px);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  color: var(--clr-primary, #ff6a00);
  display: block;
  margin-bottom: var(--sp-2, 8px);
}

/* ============================================================
   LAYOUT SYSTEM
   ============================================================ */

.section    { padding: var(--sp-20, 80px) 0; }
.section-sm { padding: var(--sp-12, 48px) 0; }

.container {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 var(--sp-6, 24px);
}

.divider {
  height: 1px;
  background: var(--clr-border, #f0e0d0);
  margin: var(--sp-6, 24px) 0;
}

@media (max-width: 768px) {
  .container { padding: 0 var(--sp-4, 16px); }
  .section    { padding: var(--sp-12, 48px) 0; }
}
@media (max-width: 480px) {
  .container { padding: 0 var(--sp-3, 12px); }
  .section    { padding: var(--sp-10, 40px) 0; }
}

/* ============================================================
   BUTTON SYSTEM
   ============================================================ */

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2, 8px);
  padding: 12px 26px;
  background: var(--grad-primary, linear-gradient(90deg,#ff6a00,#ff9440));
  color: #fff;
  font-weight: 800;
  font-size: var(--text-base, 15px);
  font-family: var(--font-base, "Inter", sans-serif);
  border: none;
  border-radius: var(--r-full, 999px);
  cursor: pointer;
  text-decoration: none;
  box-shadow: var(--shadow-btn, 0 8px 22px rgba(255,106,0,0.32));
  transition:
    transform var(--t-base, 0.28s) var(--ease-smooth),
    box-shadow var(--t-base, 0.28s) ease;
  touch-action: manipulation;
  user-select: none;
  min-height: 44px;
}
.btn-primary:hover  { transform: translateY(-2px); box-shadow: var(--shadow-lg, 0 12px 36px rgba(255,106,0,0.18)); }
.btn-primary:active { transform: scale(0.97); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2, 8px);
  padding: 11px 24px;
  background: var(--clr-primary-bg, #fff4eb);
  color: var(--clr-primary, #ff6a00);
  font-weight: 700;
  font-size: var(--text-base, 15px);
  font-family: var(--font-base, "Inter", sans-serif);
  border: 1.5px solid var(--clr-primary-border, rgba(255,120,0,0.20));
  border-radius: var(--r-full, 999px);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--t-base, 0.28s) ease;
  touch-action: manipulation;
  min-height: 44px;
}
.btn-secondary:hover {
  background: var(--clr-primary, #ff6a00);
  color: #fff;
  border-color: var(--clr-primary, #ff6a00);
}

/* ── BUTTON LOADING STATE ── */
.btn-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.85;
}
.btn-loading::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: btnSpin 0.7s linear infinite;
}
@keyframes btnSpin { to { transform: translateY(-50%) rotate(360deg); } }

/* ============================================================
   CARD SYSTEM
   ============================================================ */

.card {
  background: var(--clr-surface, #fff);
  border-radius: var(--r-xl, 24px);
  box-shadow: var(--shadow-md, 0 6px 20px rgba(255,106,0,0.12));
  border: 1px solid var(--clr-primary-border, rgba(255,120,0,0.20));
  overflow: hidden;
  transition:
    transform var(--t-base, 0.28s) var(--ease-smooth),
    box-shadow var(--t-base, 0.28s) ease;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl, 0 20px 56px rgba(255,106,0,0.24)); }
.card-body  { padding: var(--sp-6, 24px); }

/* ============================================================
   BADGE SYSTEM
   ============================================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--r-full, 999px);
  font-size: var(--text-xs, 11px);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}
.badge-orange  { background: var(--clr-primary-bg, #fff4eb);    color: var(--clr-primary, #ff6a00); }
.badge-success { background: var(--clr-success-bg, #dcfce7);    color: var(--clr-success, #16a34a); }
.badge-error   { background: var(--clr-error-bg, #fee2e2);      color: var(--clr-error, #dc2626); }
.badge-warning { background: var(--clr-warning-bg, #fef3c7);    color: var(--clr-warning, #d97706); }
.badge-info    { background: var(--clr-info-bg, #dbeafe);       color: var(--clr-info, #1d4ed8); }

/* ============================================================
   INPUT SYSTEM
   ============================================================ */

.input-field {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--r-md, 12px);
  border: 1.5px solid rgba(255,140,0,0.28);
  font-size: max(16px, var(--text-base, 15px)); /* prevents iOS zoom */
  font-family: var(--font-base, "Inter", sans-serif);
  background: var(--clr-primary-bg, #fff4eb);
  color: var(--clr-text, #1a1a1a);
  outline: none;
  transition:
    border-color var(--t-fast, 0.15s) ease,
    box-shadow var(--t-fast, 0.15s) ease,
    background var(--t-fast, 0.15s) ease;
}
.input-field:focus {
  border-color: var(--clr-primary, #ff6a00);
  box-shadow: 0 0 0 3px var(--clr-primary-glow, rgba(255,106,0,0.18));
  background: var(--clr-surface, #fff);
}
.input-field::placeholder { color: var(--clr-muted, #888); }

/* ── GLOBAL INPUT FOCUS (non .input-field elements) ── */
input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--clr-primary, #ff6a00);
  box-shadow: 0 0 0 3px var(--clr-primary-glow, rgba(255,106,0,0.13));
  background: var(--clr-surface, #fff);
}

/* ── ALERT MESSAGES ── */
.alert-success {
  background: var(--clr-success-bg, #dcfce7);
  color: var(--clr-success, #16a34a);
  padding: 14px 18px;
  border-radius: var(--r-md, 12px);
  font-weight: 700;
  border-left: 4px solid var(--clr-success, #16a34a);
  margin-bottom: 18px;
  animation: slideDown 0.4s var(--ease-smooth) both;
}
.alert-error {
  background: var(--clr-error-bg, #fee2e2);
  color: var(--clr-error, #dc2626);
  padding: 14px 18px;
  border-radius: var(--r-md, 12px);
  font-weight: 700;
  border-left: 4px solid var(--clr-error, #dc2626);
  margin-bottom: 18px;
  animation: slideDown 0.4s var(--ease-smooth) both;
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   ANIMATION SYSTEM
   ============================================================ */

/* Reveal on scroll */
.reveal       { animation: revealUp    var(--t-reveal, 0.7s) var(--ease-smooth) both; }
.reveal-left  { animation: revealLeft  var(--t-reveal, 0.7s) var(--ease-smooth) both; }
.reveal-right { animation: revealRight var(--t-reveal, 0.7s) var(--ease-smooth) both; }

/* JS-triggered: add .visible to freeze at final state */
.reveal.visible,
.reveal-left.visible,
.reveal-right.visible { animation: none; opacity: 1; transform: none; }

@keyframes revealUp    { from { opacity:0; transform:translateY(28px);  } to { opacity:1; transform:translateY(0); } }
@keyframes revealLeft  { from { opacity:0; transform:translateX(-40px); } to { opacity:1; transform:translateX(0); } }
@keyframes revealRight { from { opacity:0; transform:translateX(40px);  } to { opacity:1; transform:translateX(0); } }

/* Success pop */
@keyframes successPop {
  0%   { transform: scale(0) rotate(-10deg); opacity: 0; }
  60%  { transform: scale(1.2) rotate(5deg); }
  100% { transform: scale(1) rotate(0); opacity: 1; }
}
.success-icon-anim { animation: successPop 0.6s var(--ease-bounce) both; }

/* ============================================================
   UTILITY COMPONENTS
   ============================================================ */

/* Skeleton loader */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--clr-border, #f0e0d0) 25%,
    var(--clr-primary-bg, #fff4eb) 50%,
    var(--clr-border, #f0e0d0) 75%
  );
  background-size: 200% 100%;
  animation: skeletonShimmer 1.5s infinite;
  border-radius: var(--r-md, 12px);
}
@keyframes skeletonShimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.skeleton-text  { height: 16px; margin-bottom: 8px; border-radius: 4px; }
.skeleton-title { height: 28px; width: 60%; margin-bottom: 12px; border-radius: 6px; }
.skeleton-img   { width: 100%; height: 200px; border-radius: var(--r-lg, 18px); }
.skeleton-card  { background: var(--clr-surface, #fff); border-radius: var(--r-xl, 24px); padding: 20px; box-shadow: var(--shadow-sm); }

/* Empty state */
.empty-state { text-align: center; padding: var(--sp-16, 64px) var(--sp-6, 24px); color: var(--clr-muted, #888); }
.empty-state-icon {
  width: 80px; height: 80px;
  background: var(--clr-primary-bg, #fff4eb);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 36px;
  margin: 0 auto var(--sp-5, 20px);
  border: 2px solid var(--clr-primary-border, rgba(255,120,0,0.20));
}
.empty-state h3 { font-size: var(--text-lg, 20px); font-weight: 800; color: var(--clr-text, #1a1a1a); margin-bottom: var(--sp-2, 8px); }
.empty-state p  { font-size: var(--text-base, 15px); color: var(--clr-text-3, #666); max-width: 320px; margin: 0 auto var(--sp-5, 20px); }

/* Loading spinner */
.spinner {
  width: 20px; height: 20px;
  border: 2.5px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Glass effect */
.glass {
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255,255,255,0.4);
}

/* Toast notifications */
#toastContainer {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast, 10000);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2, 8px);
  pointer-events: none;
}
.toast {
  background: var(--clr-text, #1a1a1a);
  color: #fff;
  padding: 12px 22px;
  border-radius: var(--r-md, 12px);
  font-size: var(--text-sm, 13px);
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.4s var(--ease-smooth);
  pointer-events: all;
  display: flex;
  align-items: center;
  gap: var(--sp-2, 8px);
}
.toast.success { background: linear-gradient(90deg, var(--clr-success, #16a34a), #22c55e); }
.toast.error   { background: linear-gradient(90deg, var(--clr-error, #dc2626), #ef4444); }
.toast.info    { background: var(--grad-primary, linear-gradient(90deg,#ff6a00,#ff9440)); }
@keyframes toastIn { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }

/* Scroll to top button */
#scrollTopBtn {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px;
  height: 46px;
  background: var(--grad-primary, linear-gradient(135deg,#ff6a00,#ff9440));
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 22px;
  cursor: pointer;
  box-shadow: var(--shadow-btn, 0 8px 22px rgba(255,106,0,0.40));
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: var(--z-dropdown, 100);
}
#scrollTopBtn.show  { opacity: 1; transform: translateY(0); }
#scrollTopBtn:hover { transform: translateY(-3px) scale(1.08); box-shadow: 0 14px 30px rgba(255,106,0,0.52); }

/* Page transition overlay */
.page-transition {
  position: fixed;
  inset: 0;
  background: var(--grad-primary, linear-gradient(135deg,#ff6a00,#ff9440));
  z-index: var(--z-toast, 10000);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.page-transition.show { opacity: 1; pointer-events: all; }