/* Explain: Component styles for buttons, forms, and panels with an industrial, premium feel. */
.site-header {
    background: rgba(5, 5, 5, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    color: var(--accent-color);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    font-family: var(--font-heading);
}

.section-kicker::before {
    display: inline-block;
    width: 3rem;
    height: 2px;
    background: var(--accent-color);
    content: "";
}

.tech-panel {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    transition: all 400ms ease;
}

.tech-panel:hover {
    border-color: var(--border-light);
    background: var(--surface-light);
    transform: translateY(-4px);
}

.step-number {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 800;
    line-height: 1;
    color: var(--border-light);
    margin-bottom: 1rem;
    transition: color 300ms ease;
}

.tech-panel:hover .step-number {
    color: var(--accent-color);
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-color);
    color: #ffffff;
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.875rem 2rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 300ms ease;
    border: 1px solid var(--accent-color);
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--text-color);
    font-weight: 600;
    font-size: 0.875rem;
    padding: 0.875rem 2rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 300ms ease;
    border: 1px solid var(--border-light);
}

.btn-outline:hover {
    border-color: var(--text-color);
    background: rgba(255, 255, 255, 0.05);
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.form-input {
    width: 100%;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 1rem 1.25rem;
    font-size: 1rem; /* Previene el zoom automático en iOS */
    transition: border-color 300ms ease;
    appearance: none;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.form-status.success {
    color: #10b981;
}

.form-status.error {
    color: var(--accent-color);
}

/* Accordion adjustments */
.collapse-title {
    font-family: var(--font-heading);
    font-weight: 600;
    padding-right: 3.5rem;
    min-height: 4.5rem;
}
.collapse-content {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}