/*
 * FocusPro AI — Shared Styles
 * Used by all 4 pages: index, privacy-policy, terms-of-service, support
 */

/* ══════════════════════════════
   CSS VARIABLES — DEFAULT THEME
══════════════════════════════ */
:root {
  --p1: #7C3AED;
  --p2: #06B6D4;
  --p1-light: #A78BFA;
  --p2-light: #22D3EE;
  --dark:    #0A0A0F;
  --dark2:   #0E0E1A;
  --dark3:   #13131F;
  --surface: #1A1A2E;
  --surface2:#1E1E35;
  --text:    #FFFFFF;
  --text-sec:rgba(255,255,255,0.55);
  --text-mut:rgba(255,255,255,0.28);
  --border:  rgba(255,255,255,0.08);
  --p1-rgb:  124,58,237;
  --p2-rgb:  6,182,212;
  --p1l-rgb: 167,139,250;
  --p2l-rgb: 34,211,238;
  --grad:    linear-gradient(135deg,var(--p1),var(--p2));
  --grad-t:  linear-gradient(135deg,var(--p1-light),var(--p2-light));
  --transition: all 0.4s ease;
}

/* ══════════════════════════════
   THEME VARIANTS
══════════════════════════════ */
[data-theme="ocean"]    { --p1:#0077B6;--p2:#48CAE4;--p1-light:#90E0EF;--p2-light:#ADE8F4;--dark:#020D14;--dark2:#041824;--dark3:#061F2E;--surface:#0A2E40;--surface2:#0D3650;--p1-rgb:0,119,182;--p2-rgb:72,202,228;--p1l-rgb:144,224,239;--p2l-rgb:173,232,244;--grad:linear-gradient(135deg,#0077B6,#48CAE4);--grad-t:linear-gradient(135deg,#90E0EF,#ADE8F4); }
[data-theme="sunset"]   { --p1:#C0392B;--p2:#E67E22;--p1-light:#FF6B6B;--p2-light:#FFB347;--dark:#120808;--dark2:#1A0C0C;--dark3:#201010;--surface:#2D1515;--surface2:#361818;--p1-rgb:192,57,43;--p2-rgb:230,126,34;--p1l-rgb:255,107,107;--p2l-rgb:255,179,71;--grad:linear-gradient(135deg,#C0392B,#E67E22);--grad-t:linear-gradient(135deg,#FF6B6B,#FFB347); }
[data-theme="midnight"] { --p1:#4A4A8A;--p2:#7B68EE;--p1-light:#9090CC;--p2-light:#B0A0FF;--dark:#060608;--dark2:#0A0A10;--dark3:#0D0D16;--surface:#141420;--surface2:#181828;--p1-rgb:74,74,138;--p2-rgb:123,104,238;--p1l-rgb:144,144,204;--p2l-rgb:176,160,255;--grad:linear-gradient(135deg,#4A4A8A,#7B68EE);--grad-t:linear-gradient(135deg,#9090CC,#B0A0FF); }
[data-theme="fitness"]  { --p1:#00A86B;--p2:#007BFF;--p1-light:#00C896;--p2-light:#48A0FF;--dark:#020E08;--dark2:#041506;--dark3:#061A0A;--surface:#0A2810;--surface2:#0D3014;--p1-rgb:0,168,107;--p2-rgb:0,123,255;--p1l-rgb:0,200,150;--p2l-rgb:72,160,255;--grad:linear-gradient(135deg,#00A86B,#007BFF);--grad-t:linear-gradient(135deg,#00C896,#48A0FF); }

/* ══════════════════════════════
   LIGHT MODE
══════════════════════════════ */
[data-mode="light"] {
  --dark: #F2F2FA; --dark2: #EAEAF5; --dark3: #E0E0EE;
  --surface: #FFFFFF; --surface2: #F5F5FF;
  --text: #0C0C1E; --text-sec: rgba(12,12,30,0.58); --text-mut: rgba(12,12,30,0.32); --border: rgba(0,0,0,0.09);
}
[data-mode="light"][data-theme="ocean"]    { --dark:#EBF5FB;--dark2:#D6EEF8;--dark3:#C2E4F5;--surface:#FFFFFF;--surface2:#F0F8FF;--text:#021A2E;--text-sec:rgba(2,26,46,0.58);--text-mut:rgba(2,26,46,0.32);--border:rgba(0,0,0,0.09); }
[data-mode="light"][data-theme="sunset"]   { --dark:#FDF0EE;--dark2:#FAE0DB;--dark3:#F5CFC8;--surface:#FFFFFF;--surface2:#FFF5F3;--text:#2D0A08;--text-sec:rgba(45,10,8,0.58);--text-mut:rgba(45,10,8,0.32);--border:rgba(0,0,0,0.09); }
[data-mode="light"][data-theme="midnight"] { --dark:#EFEFF8;--dark2:#E2E2F0;--dark3:#D5D5E8;--surface:#FFFFFF;--surface2:#F3F3FA;--text:#0D0D2A;--text-sec:rgba(13,13,42,0.58);--text-mut:rgba(13,13,42,0.32);--border:rgba(0,0,0,0.09); }
[data-mode="light"][data-theme="fitness"]  { --dark:#EAF6F0;--dark2:#D5EEE2;--dark3:#C0E6D4;--surface:#FFFFFF;--surface2:#F0FAF5;--text:#041208;--text-sec:rgba(4,18,8,0.58);--text-mut:rgba(4,18,8,0.32);--border:rgba(0,0,0,0.09); }

/* ══════════════════════════════
   BASE
══════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; background: var(--dark); color: var(--text); transition: background 0.3s, color 0.3s; }

/* ── SKIP LINK ── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--p1);
  color: #fff;
  padding: 8px 16px;
  border-radius: 0 0 8px 8px;
  font-weight: 600;
  font-size: 14px;
  z-index: 9999;
  text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; }

/* ── NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 48px;
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s, padding 0.3s;
}
nav.scrolled { padding: 6px 48px; background: rgba(10,10,15,0.97); }

.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-logo img { width: 58px; height: 58px; border-radius: 14px; flex-shrink: 0; }
.nav-logo-text {
  font-size: 17px; font-weight: 800;
  background: var(--grad-t);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-logo-light { display: none; }
[data-mode="light"] .nav-logo-dark { display: none; }
[data-mode="light"] .nav-logo-light { display: block; }

.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a { text-decoration: none; color: var(--text-sec); font-size: 14px; font-weight: 500; transition: color .2s; }
.nav-links a:hover,
.nav-links a:focus-visible { color: var(--text); outline: none; }
.nav-links a.active { color: var(--p1-light); }

.nav-right { display: flex; align-items: center; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 20px; border-radius: 12px;
  font-size: 14px; font-weight: 600; text-decoration: none;
  cursor: pointer; border: none; transition: all .2s;
  font-family: 'Inter', sans-serif;
}
.btn-primary { background: var(--grad); color: #fff; }
.btn-primary:hover { opacity: .85; transform: translateY(-1px); }

#mode-toggle {
  background: none; border: none; cursor: pointer;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-sec); border-radius: 50%; transition: background .2s;
  padding: 0;
}
#mode-toggle:hover { background: rgba(255,255,255,.08); }
#mode-toggle:focus-visible { outline: 2px solid var(--p1); outline-offset: 2px; }

[data-mode="light"] nav { background: rgba(242,242,250,0.88) !important; }
[data-mode="light"] nav.scrolled { background: rgba(242,242,250,0.98) !important; }

/* ── HAMBURGER ── */
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 4px; background: none; border: none;
}
.hamburger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: all .3s; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.hamburger:focus-visible { outline: 2px solid var(--p1); outline-offset: 4px; border-radius: 4px; }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-right .btn-primary { display: none; }
  nav { padding: 12px 20px; }
}

/* ── MOBILE MENU ── */
.mobile-menu {
  display: none; position: fixed;
  top: 0; left: 0; right: 0; bottom: 0; z-index: 999;
  background: rgba(10,10,15,0.98); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  flex-direction: column; align-items: center; justify-content: center; gap: 32px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  color: var(--text); text-decoration: none;
  font-size: 24px; font-weight: 700; transition: color .2s;
}
.mobile-menu a:hover,
.mobile-menu a:focus-visible { color: var(--p1-light); outline: none; }
[data-mode="light"] .mobile-menu { background: rgba(242,242,250,0.98) !important; }
[data-mode="light"] .mobile-menu a { color: var(--text); }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 56px 48px 32px;
  background: var(--dark);
}
.foot-top {
  display: flex; gap: 52px; margin-bottom: 44px; flex-wrap: wrap;
}
.foot-brand { flex: 2; min-width: 200px; }
.foot-brand p { color: var(--text-sec); font-size: 14px; margin-top: 12px; line-height: 1.7; max-width: 300px; }
.foot-col { flex: 1; min-width: 130px; }
.foot-col h4 {
  font-size: 12px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1px; color: var(--text-sec); margin-bottom: 14px;
}
.foot-col ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.foot-col ul a { color: var(--text-sec); text-decoration: none; font-size: 14px; transition: color .2s; }
.foot-col ul a:hover,
.foot-col ul a:focus-visible { color: var(--text); outline: none; }
.foot-bottom {
  border-top: 1px solid var(--border); padding-top: 22px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 10px;
}
.foot-bottom p { font-size: 13px; color: var(--text-mut); }
.foot-bottom a { color: var(--text-mut); text-decoration: none; }
.foot-bottom a:hover,
.foot-bottom a:focus-visible { color: var(--text-sec); outline: none; }

/* ── SOCIAL LINKS ── */
.social-links { display: flex; gap: 10px; }
.social-link {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text-sec); text-decoration: none;
  font-size: 14px; font-weight: 700;
  transition: border-color .2s, color .2s, background .2s;
}
.social-link:hover,
.social-link:focus-visible {
  border-color: var(--p1-light); color: var(--p1-light);
  background: rgba(124,58,237,0.08); outline: none;
}

/* ── FOOTER RESPONSIVE ── */
@media (max-width: 960px) {
  footer { padding: 44px 24px 22px; }
}
@media (max-width: 640px) {
  footer { padding: 40px 16px 20px; }
  .foot-top { flex-direction: column; gap: 28px; }
  .foot-brand { min-width: unset; }
  .foot-col { min-width: unset; }
  .foot-bottom { flex-direction: column; text-align: center; gap: 10px; }
  .social-links { justify-content: center; }
}