/* Base button — structure only */
.btn {
    display: inline-block;
    margin-top: 0.75rem;
    padding: 0.5rem 0.9rem;
    border-radius: 10px;
    font-weight: 400;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: background 0.25s ease, color 0.25s ease, transform 0.15s ease;
}

/* Basic look (non-glass) */
.btn {
    background: var(--btn-bg, #fff);
    color: var(--btn-fg, #ffffff);
    border: 1px solid var(--btn-border, #ccc);
}

.btn:hover {
    background: var(--btn-bg-hover, #eee);
}

/* Optional: variant if you want accent-colored buttons */
.btn--accent {
    --btn-bg: var(--accent, #4fc3f7);
    --btn-fg: #fff;
    --btn-border: var(--accent, #4fc3f7);
}
.btn--accent:hover {
    --btn-bg-hover: #38bdf8;
}


.card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.container { 
    max-width: var(--max); 
    margin: 0 auto; 
    padding: 0 
    var(--pad) 
    var(--pad); 
}

/* nav */
/* base structure, no visuals */
.site-header {
  position: sticky;
  top: 0;
  height: var(--headerH);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 var(--pad);
  z-index: 10;
}

/* Glassy navbar variant */
.nav {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem var(--pad);

    background: var(--nav-bg, rgba(0, 0, 0, 0.45));
    border: 1px solid var(--nav-border, rgba(255, 255, 255, 0.25));
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
    border-radius: 999px;
}

/* optional: make links inside glass-nav readable */
.nav a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    margin: 0 0.25rem;
    transition: color 0.3s ease;
}

.nav a:hover {
    color: var(--accent, #4fc3f7);
}

.nav a + a {
    margin-left: 0.35rem;
}

.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 0.45rem;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.35);
    color: inherit;
    cursor: pointer;
    transition: background 0.25s ease, transform 0.2s ease;
}

.nav-toggle:hover {
    background: rgba(0, 0, 0, 0.45);
}

.nav-toggle:focus-visible {
    outline: 2px solid var(--accent, #4fc3f7);
    outline-offset: 2px;
}

.nav-toggle__bar {
    display: block;
    width: 20px;
    height: 2px;
    background: currentColor;
    border-radius: 999px;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 768px) {
    .site-header {
        padding: 0.75rem var(--pad);
    }

    .nav {
        position: absolute;
        top: calc(100% + 0.5rem);
        right: var(--pad);
        left: var(--pad);
        flex-direction: column;
        align-items: flex-end;
        gap: 0.5rem;
        padding: 1rem;
        border-radius: 18px;
        transform: scaleY(0);
        transform-origin: top;
        opacity: 0;
        pointer-events: none;
        transition: transform 0.25s ease, opacity 0.25s ease;
    }

    .nav[data-collapsed="false"] {
        transform: scaleY(1);
        opacity: 1;
        pointer-events: auto;
    }

    .nav a {
        width: auto;
        margin: 0;
        padding: 0.35rem 0;
        text-align: right;
        align-self: flex-end;
    }

    .nav-toggle {
        display: inline-flex;
    }
}

@media (min-width: 769px) {
    .nav a {
        margin: 0 0.75rem;
    }
}


/* Regular text container */
.text-container {
    position: relative;
    z-index: 1;
    max-width: 720px;
    padding: clamp(1rem, 2vw, 2rem);
    border-radius: 16px;

    /* solid background and clean edge */
    background: var(--text-bg, #fff);
    border: 1px solid var(--text-border, #eaeaea);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    color: var(--text-fg, #111);
}

.brand {
  color: #fff;
    text-decoration: none;
    font-weight: 500;
    margin: 0 0.75rem;
    transition: color 0.3s ease;
}

.brand a:hover {
    color: var(--accent, #ae4ff7);
}

.social-links {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.social-links a {
  color: #fff;
  transition: color 0.3s ease, transform 0.2s ease;
}

.social-links a:hover {
  color: var(--accent, #4fc3f7);
  transform: translateY(-2px);
}

.social-links svg {
  width: 1.5rem;
  height: 1.5rem;
}



/* Full-width heading section */
.heading {
    width: 100%;
    background: var(--heading-bg, #f2f2f2); /* light gray */
    padding: clamp(1.5rem, 4vw, 3rem) 0;

    display: flex;
    justify-content: center;               /* center inner oval */
    align-items: center;
}

/* Inner oval text container */
.heading__title {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 9999px;                 /* <-- long oval shape */
    background: var(--heading-inner-bg, #fff);
    color: var(--heading-text, #ffffff);
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 600;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}