/* ==========================================================================
   Helmann's Fine Tuning — Components & UI System
   ========================================================================== */

/* --------------------------------------------------
   Navigation Header
   -------------------------------------------------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(7, 8, 10, 0.85);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: var(--border-subtle);
    transition: all 0.3s ease;
}

.site-header.scrolled {
    background: rgba(7, 8, 10, 0.95);
    border-bottom-color: rgba(229, 193, 88, 0.15);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

.nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.brand-logo .brand-mark {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-gold-bright), var(--color-gold-muted));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-ebony);
    font-family: var(--font-mono);
    font-weight: 800;
    font-size: 1rem;
    box-shadow: 0 0 15px rgba(229, 193, 88, 0.3);
}

.brand-logo span.accent {
    color: var(--color-gold-electric);
    font-weight: 400;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link:hover {
    color: var(--color-gold-electric);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-gold-electric);
    transition: width 0.25s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mobile-toggle {
    display: none;
    background: none;
    border: var(--border-subtle);
    color: var(--text-primary);
    padding: 0.5rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

/* --------------------------------------------------
   Buttons
   -------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    font-family: var(--font-sans);
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    padding: 0.85rem 1.75rem;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gold-bright) 0%, var(--color-gold-electric) 100%);
    color: var(--color-ebony);
    box-shadow: 0 4px 20px var(--color-gold-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(229, 193, 88, 0.4);
    background: linear-gradient(135deg, #ffffff 0%, var(--color-gold-bright) 100%);
}

.btn-outline {
    background: rgba(15, 17, 23, 0.6);
    color: var(--text-primary);
    border: 1px solid rgba(229, 193, 88, 0.35);
    backdrop-filter: blur(8px);
}

.btn-outline:hover {
    border-color: var(--color-gold-electric);
    background: rgba(229, 193, 88, 0.08);
    color: var(--color-gold-bright);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(229, 193, 88, 0.15);
}

.btn-sm {
    padding: 0.55rem 1.15rem;
    font-size: 0.82rem;
}

.btn-block {
    width: 100%;
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* --------------------------------------------------
   Badges & Status Elements
   -------------------------------------------------- */
.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.85rem;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--radius-full);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: #34d399;
    letter-spacing: 0.02em;
}

.pulse-dot {
    width: 7px;
    height: 7px;
    background: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 8px #10b981;
    animation: pulseGlow 2s infinite;
}

@keyframes pulseGlow {
    0% { transform: scale(0.95); opacity: 0.7; }
    50% { transform: scale(1.3); opacity: 1; box-shadow: 0 0 12px #10b981; }
    100% { transform: scale(0.95); opacity: 0.7; }
}

.badge-tech {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.25rem 0.65rem;
    background: rgba(229, 193, 88, 0.08);
    border: 1px solid rgba(229, 193, 88, 0.25);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-gold-bright);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* --------------------------------------------------
   High-Tech Cards
   -------------------------------------------------- */
.card-tech {
    background: var(--color-surface-card);
    border: var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 2rem;
    position: relative;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: var(--shadow-deep);
}

.card-tech::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--color-gold-electric);
    opacity: 0.4;
    transition: width 0.3s ease, opacity 0.3s ease;
}

.card-tech:hover {
    border-color: var(--color-gold-border);
    transform: translateY(-4px);
    box-shadow: var(--shadow-deep), var(--shadow-gold);
    background: var(--color-surface-hover);
}

.card-tech:hover::before {
    width: 60px;
    opacity: 1;
}

.card-highlight {
    border-color: var(--color-gold-border);
    background: linear-gradient(180deg, rgba(23, 27, 36, 0.9) 0%, rgba(15, 17, 23, 0.9) 100%);
    box-shadow: var(--shadow-deep), 0 0 25px rgba(229, 193, 88, 0.08);
}

/* --------------------------------------------------
   HUD Metrics (Hero Section)
   -------------------------------------------------- */
.hud-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    margin-top: 3.5rem;
    width: 100%;
}

.hud-card {
    background: rgba(15, 17, 23, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--radius-sm);
    padding: 1.25rem 1.5rem;
    position: relative;
    backdrop-filter: blur(10px);
    border-left: 2px solid var(--color-gold-electric);
    transition: all 0.3s ease;
}

.hud-card:hover {
    border-color: rgba(229, 193, 88, 0.4);
    border-left-color: var(--color-gold-bright);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
}

.hud-val {
    font-family: var(--font-mono);
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
}

.hud-val span.unit {
    font-size: 1rem;
    color: var(--color-gold-electric);
    font-weight: 500;
}

.hud-label {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 0.35rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: var(--font-mono);
}

/* --------------------------------------------------
   Form Controls
   -------------------------------------------------- */
.form-group {
    margin-bottom: 1.25rem;
    text-align: left;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.45rem;
    font-family: var(--font-mono);
    letter-spacing: 0.02em;
}

.form-control {
    width: 100%;
    padding: 0.85rem 1.1rem;
    background: rgba(10, 12, 17, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: all 0.25s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-gold-electric);
    box-shadow: 0 0 0 3px rgba(229, 193, 88, 0.15);
    background: rgba(15, 17, 23, 0.95);
}

.form-control::placeholder {
    color: var(--text-dim);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23e5c158' viewBox='0 0 24 24'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
    cursor: pointer;
}

select.form-control option {
    background: var(--color-carbon);
    color: var(--text-primary);
}

.status-message {
    margin-top: 1rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    text-align: center;
    min-height: 1.25rem;
    transition: all 0.3s ease;
}

/* --------------------------------------------------
   FAQ Accordion
   -------------------------------------------------- */
.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: var(--color-surface-card);
    border: var(--border-subtle);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(229, 193, 88, 0.25);
}

.faq-item.active {
    border-color: var(--color-gold-border);
    background: var(--color-surface-hover);
}

.faq-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.4rem 1.75rem;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.05rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    gap: 1rem;
}

.faq-icon {
    width: 22px;
    height: 22px;
    color: var(--color-gold-electric);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0, 1, 0, 1);
    padding: 0 1.75rem;
}

.faq-item.active .faq-content {
    max-height: 500px;
    transition: max-height 0.4s ease-in;
    padding-bottom: 1.5rem;
}

.faq-content p {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.7;
}

/* --------------------------------------------------
   Responsive Media Queries
   -------------------------------------------------- */
@media (max-width: 992px) {
    .hud-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .nav-menu {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        width: 100%;
        background: rgba(7, 8, 10, 0.98);
        border-bottom: 1px solid rgba(229, 193, 88, 0.2);
        flex-direction: column;
        padding: 2rem 1.5rem;
        gap: 1.5rem;
        box-shadow: 0 20px 40px rgba(0,0,0,0.8);
    }
    .nav-menu.open {
        display: flex;
    }
    .mobile-toggle {
        display: block;
    }
}

@media (max-width: 576px) {
    .hud-grid {
        grid-template-columns: 1fr;
    }
    .btn {
        width: 100%;
    }
}