/* =========================================================
   19. COMPONENTS
   ========================================================= */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;

    min-height: 3.25rem;
    padding-inline: 1.5rem;

    border-radius: var(--radius-pill);

    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;

    transition:
        transform var(--duration-normal) var(--ease-standard),
        background var(--duration-normal) ease,
        color var(--duration-normal) ease,
        border-color var(--duration-normal) ease;
}

.button:hover {
    transform: translateY(-3px);
}

.button--primary {
    background: var(--color-white);
    color: var(--color-black);
}

.button--secondary,
.button--ghost {
    border: 1px solid var(--color-line-strong);
    color: var(--color-white);
}

.button--secondary:hover,
.button--ghost:hover {
    background: var(--color-white);
    color: var(--color-black);
}

.button--ghost {
    background: transparent;
}

.closing-line {
    margin-top: 5rem;

    text-align: center;

    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 5rem);
}

/* =========================================================
   ENERGY VISUAL LANGUAGE
   ========================================================= */

.energy-node {
    position: relative;
    isolation: isolate;
}

.energy-node::before {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    border: 1px solid rgba(var(--energy-current-rgb, 255,255,255), 0.35);
    box-shadow: 0 0 18px rgba(var(--energy-current-rgb, 255,255,255), 0.08);
    opacity: 0.65;
    pointer-events: none;
    transition:
        opacity 0.5s ease,
        border-color 0.5s ease,
        box-shadow 0.5s ease;
}

.energy-node:hover::before,
.energy-node.is-active::before {
    opacity: 1;
    border-color: rgba(var(--energy-current-rgb, 255,255,255), 0.75);
    box-shadow:
        0 0 20px rgba(var(--energy-current-rgb, 255,255,255), 0.16),
        0 0 60px rgba(var(--energy-current-rgb, 255,255,255), 0.08);
}

.energy-glow {
    position: absolute;
    width: 180px;
    aspect-ratio: 1;
    border-radius: 50%;
    background:
        radial-gradient(
            circle,
            rgba(var(--energy-current-rgb, 255,255,255), 0.18),
            rgba(var(--energy-current-rgb, 255,255,255), 0.06) 35%,
            transparent 70%
        );
    filter: blur(20px);
    pointer-events: none;
}

/* Subtle energy underline for flow labels */
.energy-label {
    position: relative;
    color: var(--color-text);
}

.energy-label::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -0.25rem;
    height: 1px;
    background: rgba(var(--energy-current-rgb, 255,255,255), 0.55);
    box-shadow: 0 0 12px rgba(var(--energy-current-rgb, 255,255,255), 0.35);
    opacity: 0.7;
}

.button--primary {
    box-shadow:
        0 0 0 1px rgba(255,255,255,0.08),
        0 0 40px rgba(0,119,255,0.08);
}

.button--primary:hover {
    box-shadow:
        0 0 0 1px rgba(255,255,255,0.16),
        0 0 50px rgba(0,119,255,0.14),
        0 0 80px rgba(153,0,255,0.06);
}

/* =========================================================
   EXPERIENCE-STYLE ACTIONS
   ========================================================= */

.experience-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.7rem;
    min-height: 3.1rem;
    padding: 0.85rem 1.35rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition:
        transform 0.35s var(--ease-standard),
        background 0.35s ease,
        color 0.35s ease,
        border-color 0.35s ease,
        box-shadow 0.35s ease;
}

.experience-btn-primary {
    background: var(--color-white);
    color: var(--color-black);
    box-shadow: 0 0 40px rgba(0, 119, 255, 0.08);
}

.experience-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow:
        0 0 0 1px rgba(255,255,255,0.16),
        0 0 50px rgba(0,119,255,0.14);
}

.experience-btn-secondary {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-line-strong);
}

.experience-btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-black);
}

/* =========================================================
   FOOTER
   ========================================================= */

.site-footer {
    padding: 4.5rem 0 2rem;
    border-top: 1px solid var(--color-line);
    background: rgba(255,255,255,0.01);
}

.site-footer__top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 3rem;
    flex-wrap: wrap;
}

.footer-brand strong {
    display: block;
    font-family: var(--font-display);
    font-size: 1.05rem;
    letter-spacing: 0.04em;
}

.footer-brand p {
    margin-top: 0.75rem;
    max-width: 28rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    font-size: 0.92rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem 1.75rem;
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.footer-links a:hover {
    color: var(--color-white);
}

.site-footer__bottom {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-line);
}

.experience-footer-bottom {
    color: var(--color-text-faint);
    font-size: 0.8rem;
    line-height: 1.7;
}

@media (max-width: 767px) {
    .site-footer__top {
        flex-direction: column;
        gap: 2rem;
    }
}