/* Custom overrides and small utilities */
:root {
    --glass-bg: rgba(8,8,8,0.6);
}

/* Navbar tweaks */
.nv-bg {
    background: linear-gradient(180deg, rgba(10,10,10,0.85), rgba(10,10,10,0.75));
    border-bottom: 1px solid rgba(255,255,255,0.03);
}

.img-nav {
    width: 42px;
    height: 42px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.06);
}

.nav-cont {
    color: var(--text-light) !important;
    font-weight: 600;
    padding: 0.4rem 0.8rem;
}

.nav-cont:hover {
    color: var(--accent-color) !important;
}

.links {
    width: 32px;
    height: 32px;
    object-fit: cover;
    opacity: 0.95;
    transition: transform 0.25s ease, opacity 0.2s ease;
}

.links:hover { transform: translateY(-3px) scale(1.05); opacity: 1; }

/* Hero tweaks */
.hero-section { padding-top: 3.5rem; padding-bottom: 3.5rem; }
.hero-section .display-4 { font-family: 'Poppins', system-ui, sans-serif; font-weight:700; }
.big-para a { color: var(--primary-light); text-decoration: underline; }

/* Footer */
.footer { background: transparent; padding: 2rem 0; }
.footer-textinfo { color: var(--text-muted); }

@media (max-width: 767px) {
  .hero-section { padding-top: 2rem; padding-bottom: 2rem; }
  .img-cover { max-width: 160px; margin: 0 auto; display:block; }
  .navbar .container { padding-left: 0.5rem; padding-right: 0.5rem; }
}

/* small utility to improve contrast on mobile toggler */
.navbar-toggler { border-color: rgba(255,255,255,0.08); }

/* Primary button tweak to match theme */
.btn-primary {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-color: rgba(255,255,255,0.06);
    box-shadow: 0 6px 18px rgba(13,110,253,0.12);
}
.btn-primary:hover {
    background: linear-gradient(90deg, var(--primary-light), var(--primary-dark));
}

/* Accessible focus outlines */
.btn:focus, .navbar-toggler:focus, a:focus {
    outline: 3px solid rgba(13,110,253,0.18);
    outline-offset: 2px;
}

/* ===== Theme: Light Overrides ===== */
html[data-theme="light"] {
    --primary-color: #0d6efd;
    --primary-light: #1f7fe0;
    --accent-color: #0b5e6a;
    --text-light: #0f1724; /* dark text on light bg */
    --text-muted: #4b5563;
    --bg-dark: #ffffff;
    --bg-darker: #f6f7f9;
    --bg-card: #ffffff;
    --border-color: #e6e6e9;
    --shadow-sm: 0 2px 6px rgba(16,24,40,0.06);
    --shadow-md: 0 6px 18px rgba(16,24,40,0.08);
    --shadow-lg: 0 10px 30px rgba(2,6,23,0.06);
}

/* Theme toggle specific */
.theme-toggle { padding: 0.25rem 0.5rem; font-size: 0.9rem; }
.theme-toggle .icon { pointer-events: none; }

/* Smooth theme transition helper - added/removed by JS during toggle */
html.theme-transition, html.theme-transition body, html.theme-transition .card, html.theme-transition .navbar, html.theme-transition .btn, html.theme-transition .site-logo {
    transition: background-color 0.36s ease, color 0.36s ease, border-color 0.36s ease, box-shadow 0.36s ease, filter 0.36s ease;
}

/* Logo fallback styling if no light variant found */
.site-logo.logo-filter-light {
    filter: invert(1) contrast(90%);
}

/* Navbar theme adjustments */
.nv-bg {
    /* slightly translucent dark background by default */
    background: linear-gradient(180deg, rgba(8,10,12,0.9), rgba(8,10,12,0.85));
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

/* Ensure nav link colors follow theme variables */
.nv-bg .nav-link, .nv-bg .navbar-brand, .nv-bg .nav-cont {
    color: var(--text-light) !important;
}

/* Light-theme navbar (overrides when html[data-theme="light"]) */
html[data-theme="light"] .nv-bg {
    background: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(246,247,249,0.98));
    border-bottom: 1px solid var(--border-color);
}

html[data-theme="light"] .nv-bg .nav-link,
html[data-theme="light"] .nv-bg .navbar-brand,
html[data-theme="light"] .nv-bg .nav-cont {
    color: var(--text-light) !important; /* --text-light is dark in light theme */
}

/* Toggler icon contrast: ensure visibility on both themes */
.navbar-toggler-icon { filter: brightness(1.2) contrast(1); }