/* ============================================================
   assets/css/global.css
   ============================================================ */

/* ===== THEME CLAIR ===== */
:root {
  --violet:       #6d28d9;
  --violet-light: #8b5cf6;
  --violet-pale:  #ede9fe;
  --violet-soft:  #f5f3ff;

  --bg:           #ffffff;
  --surface:      #ffffff;
  --surface-alt:  #fafafa;

  --dark:         #0a0a0f;
  --mid:          #3a3550;
  --muted:        #7a6e9a;

  --border:       #e8e5f0;

  --shadow-sm:    0 1px 8px rgba(109,40,217,.07);
  --shadow-md:    0 6px 24px rgba(109,40,217,.10);
  --shadow-lg:    0 16px 48px rgba(109,40,217,.13);

  --radius-sm:    10px;
  --radius-md:    16px;
  --radius-lg:    24px;

  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body:    'DM Sans', system-ui, sans-serif;

  --nav-bg:       rgba(255,255,255,.92);
  --nav-border:   #e8e5f0;
  --toggle-bg:    #f0eef8;
}

/* ===== THEME SOMBRE ===== */
[data-theme="dark"] {
  --violet:       #8b5cf6;
  --violet-light: #a78bfa;
  --violet-pale:  #2e1d5e;
  --violet-soft:  #1a1230;

  --bg:           #0b0b10;
  --surface:      #13131a;
  --surface-alt:  #17172060;

  --dark:         #eeebff;
  --mid:          #b0a8d0;
  --muted:        #6a6090;

  --border:       #252038;

  --shadow-sm:    0 1px 8px rgba(0,0,0,.25);
  --shadow-md:    0 6px 24px rgba(0,0,0,.35);
  --shadow-lg:    0 16px 48px rgba(0,0,0,.45);

  --nav-bg:       rgba(11,11,16,.92);
  --nav-border:   #252038;
  --toggle-bg:    #252038;
}

/* ===== TRANSITION THEME ===== */
body, .vtc-nav, .vtc-footer, .service-card, .review-inner, .modal-box {
  transition: background-color .3s ease, border-color .3s ease, color .2s ease;
}

/* ===== BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html  { scroll-behavior: smooth; }
body  { font-family: var(--font-body); background: var(--bg); color: var(--dark); line-height: 1.6; overflow-x: hidden; }
img   { max-width: 100%; display: block; }
a     { color: inherit; }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar       { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--violet-pale); border-radius: 3px; }

/* ===== NAVBAR ===== */
.vtc-nav {
  position: sticky; top: 0; z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--nav-border);
  padding: .875rem 0;
}
.vtc-nav.scrolled { box-shadow: var(--shadow-sm); }

.nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 2rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}

.nav-brand {
  display: flex; align-items: center; gap: .6rem;
  text-decoration: none; color: var(--dark);
  font-weight: 600; font-size: 1rem; letter-spacing: -.02em; flex-shrink: 0;
}
.nav-brand img { width: 34px; height: 34px; border-radius: 50%; object-fit: cover; }

.nav-right { display: flex; align-items: center; gap: .4rem; }

.nav-links { display: flex; align-items: center; gap: .1rem; list-style: none; }
.nav-links a {
  text-decoration: none; color: var(--mid);
  font-size: .865rem; font-weight: 500;
  padding: .4rem .7rem; border-radius: 7px;
  transition: background .15s, color .15s;
}
.nav-links a:hover,
.nav-links a.active { background: var(--violet-pale); color: var(--violet); }

.nav-cta {
  background: var(--violet) !important; color: #fff !important;
  padding: .42rem 1rem !important; border-radius: 7px !important;
}
.nav-cta:hover { opacity: .88; }

.dark-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  background: var(--toggle-bg); border: 1px solid var(--border);
  border-radius: 7px; cursor: pointer; font-size: .9rem; flex-shrink: 0;
  transition: background .2s, border-color .2s;
}
.dark-toggle:hover { border-color: var(--violet); }

.nav-toggle {
  display: none; background: none; border: none;
  cursor: pointer; color: var(--dark); font-size: 1.3rem; padding: .2rem;
}

@media(max-width: 820px) {
  .nav-toggle { display: block; }
  .nav-collapse {
    display: none; position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--surface); border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem 1.5rem; flex-direction: column; gap: .4rem;
  }
  .nav-collapse.open { display: flex; }
  .nav-links { flex-direction: column; align-items: flex-start; width: 100%; }
  .nav-links a { width: 100%; padding: .6rem .9rem; }
}

/* ===== FOOTER ===== */
.vtc-footer {
  background: var(--surface-alt); border-top: 1px solid var(--border);
  padding: 2rem 2rem;
}
.footer-inner {
  max-width: 1280px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}
.footer-brand { font-family: var(--font-display); font-size: 1rem; color: var(--dark); }
.footer-links { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; }
.footer-links a,
.footer-links span { color: var(--muted); text-decoration: none; font-size: .78rem; transition: color .2s; }
.footer-links a:hover { color: var(--violet); }

/* ===== BOUTONS ===== */
.btn-primary {
  display: inline-flex; align-items: center; gap: .45rem;
  background: var(--violet); color: #fff;
  text-decoration: none; font-weight: 600; font-size: .95rem;
  padding: .8rem 1.6rem; border-radius: 10px; border: none; cursor: pointer;
  box-shadow: 0 2px 14px rgba(109,40,217,.26); transition: all .2s;
}
.btn-primary:hover { background: var(--violet-light); transform: translateY(-1px); box-shadow: 0 5px 20px rgba(109,40,217,.36); color: #fff; text-decoration: none; }

.btn-ghost {
  display: inline-flex; align-items: center; gap: .45rem;
  background: transparent; color: var(--mid);
  text-decoration: none; font-weight: 500; font-size: .95rem;
  padding: .8rem 1.25rem; border-radius: 10px;
  border: 1.5px solid var(--border); transition: all .2s;
}
.btn-ghost:hover { border-color: var(--violet); color: var(--violet); background: var(--violet-pale); text-decoration: none; }

/* ===== SECTIONS ===== */
section { padding: 5rem 2rem; }
.section-inner { max-width: 1280px; margin: 0 auto; }

.section-tag {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .7rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--violet); margin-bottom: .75rem;
}
.section-tag::before { content: ''; display: block; width: 16px; height: 2px; background: var(--violet); border-radius: 2px; }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  color: var(--dark); line-height: 1.18; margin-bottom: .75rem;
}
.section-sub { color: var(--muted); font-size: 1rem; max-width: 520px; line-height: 1.75; }

/* ===== SCROLL REVEAL ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ===== ANIMATIONS ===== */
@keyframes fadeIn   { from{opacity:0}      to{opacity:1} }
@keyframes fadeInUp { from{opacity:0;transform:translateY(18px)} to{opacity:1;transform:translateY(0)} }
@keyframes pulse-dot {
  0%,100%{box-shadow:0 0 0 0 rgba(34,197,94,.4)}
  50%    {box-shadow:0 0 0 6px rgba(34,197,94,0)}
}