:root {
    --color-gold: #D4AF37;
    --color-gold-light: #F3E5AB;
    --color-gold-dark: #AA8C2C;
    --color-black: #0F0F0F;
    --color-dark-blue: #1A1E26;
    --color-white: #FFFFFF;

    --font-heading: 'Playfair Display', serif;
    --font-body: 'Montserrat', sans-serif;

    /* Shadow system */
    --shadow-1: 0 8px 24px rgba(0, 0, 0, 0.12);
    /* cards */
    --shadow-2: 0 14px 32px rgba(0, 0, 0, 0.18);
    /* card hover */
    --shadow-3: 0 10px 24px rgba(0, 0, 0, 0.25);
    /* CTA / primary btn hover */

    /* Card base bg */
    --card-bg: rgba(26, 30, 38, 0.95);

    /* Transition */
    --t-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: var(--font-body);
    background-color: var(--color-black);
    color: var(--color-white);
    overflow-x: hidden;
}

/* Global Microinteractions Standard */
a,
button,
input,
select,
textarea,
.btn,
[role="button"] {
    transition: all 250ms ease;
}

h1,
h2,
h3,
h4,
h5,
h6,
.font-playfair {
    font-family: var(--font-heading);
}

.text-gold {
    color: var(--color-gold) !important;
}

/* Navbar */
.navbar {
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent);
    padding: 20px 0;
    transition: background 0.3s ease;
}

.navbar.scrolled {
    background: rgba(15, 15, 15, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
    padding: 15px 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-gold) !important;
}

/* =========================================
   BUTTON TOKEN SYSTEM
   ========================================= */

/* Base premium button – apply alongside any btn-* class */
.btn-premium {
    border-radius: 999px;
    padding: 12px 28px;
    font-weight: 600;
    transition:
        transform var(--t-base),
        box-shadow var(--t-base);
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-3);
}

/* Buttons - Pill Style */
.btn {
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition:
        transform var(--t-base),
        box-shadow var(--t-base),
        background var(--t-base),
        color var(--t-base);
}

.btn-gold {
    background: linear-gradient(135deg, var(--color-gold), #b8860b);
    border: none;
    color: #000;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
}

.btn-gold:hover {
    background: linear-gradient(135deg, #b8860b, var(--color-gold));
    transform: translateY(-3px);
    box-shadow: 0 10px 24px rgba(212, 175, 55, 0.55);
    color: #000;
}

.btn-outline-gold {
    border: 2px solid var(--color-gold);
    color: var(--color-gold);
    background: transparent;
}

.btn-outline-gold:hover {
    background: var(--color-gold);
    color: #000;
    transform: translateY(-2px);
    box-shadow: var(--shadow-3);
}

.btn-outline-dark {
    border: 2px solid #000;
    color: #000;
    background: transparent;
}

.btn-outline-dark:hover {
    background: #000;
    color: #fff;
    transform: translateY(-2px);
}

.btn-outline-light:hover {
    color: var(--color-black);
    background: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-3);
}

/* Global focus-visible */
:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 3px;
}

/* =========================================
   CARD TOKEN SYSTEM
   ========================================= */
.card-premium {
    border-radius: 16px;
    padding: 24px;
    background: var(--card-bg);
    box-shadow: var(--shadow-1);
    transition:
        transform var(--t-base),
        box-shadow var(--t-base);
}

.card-premium:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2);
}

/* =========================================
   LIGHT SECTION DEPTH
   ========================================= */
.section-light {
    background: linear-gradient(to bottom, #f8f9fa, #f3f4f6);
    box-shadow: inset 0 1px 0 rgba(0, 0, 0, 0.04);
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 88vh;
    max-height: 100vh;
    display: flex;
    align-items: center;
    background-color: var(--color-black);
    overflow: hidden;
    padding: 64px 0;
}

@media (min-width: 992px) {
    .hero-section {
        min-height: 100vh;
        max-height: 100vh;
        padding: 0;
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(26, 30, 38, 0.4) 0%, rgba(15, 15, 15, 0.9) 100%);
    z-index: 1;
}

/* Hero Content - Zone Negativa */
.hero__content {
    position: relative;
    z-index: 10;
    text-align: center;
}

@media (min-width: 992px) {
    .hero__content {
        text-align: left;
    }
}

.hero-title {
    line-height: 1.1;
    font-size: clamp(2.2rem, 8vw, 3.8rem);
    margin-bottom: 1.5rem;
}

/* Hero Visual - Stack Auto-Focus */
.hero__visual {
    position: relative;
    z-index: 5;
    height: 220px;
    margin-top: 3rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

@media (min-width: 992px) {
    .hero__visual {
        height: 500px;
        margin-top: 0;
    }
}

.hero-stack {
    position: relative;
    width: min(460px, 42vw);
    aspect-ratio: 1 / 1;
    margin-left: auto;
    isolation: isolate;
}

.stack-card {
    position: absolute;
    inset: 0;
    border-radius: 20px;
    overflow: hidden;
    transform-origin: 50% 60%;
    transition: transform 280ms cubic-bezier(.4, 0, .2, 1), box-shadow 280ms cubic-bezier(.4, 0, .2, 1);
    box-shadow: 0 10px 26px rgba(0, 0, 0, .28);
    will-change: transform;
    background-color: var(--color-black);
}

.stack-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Deck Positions (Desktop Base) */
@media (min-width: 992px) {
    .stack-card[data-card="1"] {
        transform: translate(0, 0) rotate(-2deg) scale(1.00);
        z-index: 3;
    }

    .stack-card[data-card="2"] {
        transform: translate(22px, 14px) rotate(1.5deg) scale(.98);
        z-index: 2;
    }

    .stack-card[data-card="3"] {
        transform: translate(44px, 28px) rotate(4deg) scale(.96);
        z-index: 1;
    }

    /* Active States - Loop */
    .hero-stack.is-active-1 .stack-card[data-card="1"] {
        transform: translate(0, -14px) rotate(-1deg) scale(1.04);
        box-shadow: 0 18px 46px rgba(0, 0, 0, .40);
        z-index: 5;
    }

    .hero-stack.is-active-2 .stack-card[data-card="2"] {
        transform: translate(10px, -18px) rotate(0deg) scale(1.05);
        box-shadow: 0 18px 46px rgba(0, 0, 0, .40);
        z-index: 5;
    }

    .hero-stack.is-active-3 .stack-card[data-card="3"] {
        transform: translate(20px, -22px) rotate(2deg) scale(1.05);
        box-shadow: 0 18px 46px rgba(0, 0, 0, .40);
        z-index: 5;
    }

    /* Hover Refinement */
    .hero-stack.is-active-1 .stack-card[data-card="1"]:hover,
    .hero-stack.is-active-2 .stack-card[data-card="2"]:hover,
    .hero-stack.is-active-3 .stack-card[data-card="3"]:hover {
        transform: translate(0, -18px) scale(1.06);
    }
}

/* Mobile-First: Hide secondary cards */
@media (max-width: 991.98px) {
    .hero-stack {
        width: min(92vw, 420px);
        margin: 18px auto 0;
    }

    .stack-card[data-card="2"],
    .stack-card[data-card="3"] {
        display: none;
    }

    .stack-card[data-card="1"] {
        position: relative;
        inset: auto;
        transform: none !important;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .stack-card {
        transition: none !important;
    }
}

.ls-2 {
    letter-spacing: 2px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 100%);
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(212, 175, 55, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero .lead {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Contrast Section - New Design */
.contrast-card {
    background: linear-gradient(135deg, rgba(40, 40, 40, 0.8), rgba(20, 20, 20, 0.9));
    border-radius: 16px;
    padding: 2.5rem;
    height: 100%;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-1);
    transition:
        transform var(--t-base),
        box-shadow var(--t-base);
}

.contrast-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2);
}

.contrast-card-positive {
    background: linear-gradient(135deg, rgba(52, 73, 45, 0.4), rgba(30, 40, 25, 0.6));
    border: 1px solid rgba(134, 188, 37, 0.3);
}

.contrast-card-positive:hover {
    box-shadow: 0 10px 40px rgba(134, 188, 37, 0.2);
}

.contrast-card-negative {
    background: linear-gradient(135deg, rgba(60, 30, 30, 0.3), rgba(30, 20, 20, 0.5));
    border: 1px solid rgba(220, 53, 69, 0.2);
}

.contrast-card-negative:hover {
    box-shadow: 0 10px 40px rgba(220, 53, 69, 0.15);
}

.contrast-card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.contrast-card-positive .contrast-card-icon {
    color: #86bc25;
}

.contrast-card-negative .contrast-card-icon {
    color: #dc3545;
}

.contrast-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.contrast-list li {
    padding: 0.75rem 0;
    font-size: 1.05rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.contrast-list li:last-child {
    border-bottom: none;
}

.contrast-card-positive .contrast-list i {
    color: #86bc25;
}

.contrast-card-negative .contrast-list i {
    color: #dc3545;
}

/* Timeline Section */
.timeline-wrapper {
    position: relative;
    padding: 2rem 0;
}

.timeline-line {
    position: absolute;
    top: 50%;
    left: 10%;
    right: 10%;
    height: 1px;
    background: rgba(212, 175, 55, 0.3);
    /* Gold Line */
    z-index: 1;
    transform: translateY(-50%);
}

.timeline-icon-box {
    width: 80px;
    height: 80px;
    background-color: #000;
    /* Match section bg to hide line behind icon */
    border: 1px solid var(--color-gold);
    z-index: 2;
    position: relative;
    transition: all 0.3s ease;
}

.timeline-icon-box:hover {
    background-color: var(--color-gold);
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.4);
    transform: translateY(-5px);
}

.timeline-icon-box:hover i {
    color: #000 !important;
}

/* Intermediate CTA Card */
.bg-dark-blue-darker {
    background-color: #050a14;
}

.cta-card {
    background: linear-gradient(145deg, #0a1120 0%, #000000 100%);
    border-radius: 16px;
    box-shadow: var(--shadow-1);
    transition:
        transform var(--t-base),
        box-shadow var(--t-base);
}

.cta-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2);
}

.btn-pill {
    border-radius: 50px;
}

.shadow-gold {
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.blur-xl {
    filter: blur(60px);
}

.bg-gold-gradient {
    background: radial-gradient(circle, rgba(212, 175, 55, 0.2) 0%, rgba(0, 0, 0, 0) 70%);
}

/* Floating Action Buttons */
.floating-buttons {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: flex-end;
}

/* Custom WhatsApp Button */
.floating-whatsapp {
    display: flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    color: #fff;
    padding: 12px 20px;
    border-radius: 50px;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    transition: all 0.3s ease;
    animation: pulse-soft 3s ease-in-out infinite;
    max-width: 300px;
}

.floating-whatsapp:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(37, 211, 102, 0.6);
    color: #fff;
    animation: none;
}

.floating-whatsapp-icon {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.whatsapp-initials {
    font-weight: 700;
    font-size: 1rem;
    color: #fff;
}

.floating-whatsapp-content {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.floating-whatsapp-title {
    font-weight: 700;
    font-size: 0.95rem;
    line-height: 1.3;
}

.floating-whatsapp-subtitle {
    font-size: 0.75rem;
    opacity: 0.9;
    line-height: 1.3;
}

.floating-whatsapp-logo {
    font-size: 1.8rem;
    flex-shrink: 0;
}

/* Pulse Animation (Soft) */
@keyframes pulse-soft {

    0%,
    100% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    }

    50% {
        box-shadow: 0 4px 30px rgba(37, 211, 102, 0.7);
    }
}

/* Back to Top Button */
.btn-back-to-top {
    background: linear-gradient(135deg, var(--color-gold), #b8860b);
    color: #000;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.6);
}

.btn-back-to-top.show {
    display: flex;
}

/* Mobile Adjustments */
@media (max-width: 768px) {

    /* Hero */
    .hero-section {
        height: 100vh;
        min-height: 0;
        padding: 80px 0 56px;
    }

    /* Section spacing */
    .section-padding {
        padding: 64px 0;
    }

    .section-padding-md {
        padding: 48px 0;
    }

    /* Card stacking */
    .card-premium+.card-premium {
        margin-top: 16px;
    }

    /* Hero internal spacing */
    .hero-title {
        margin-bottom: 1.75rem !important;
    }

    .hero-section .lead {
        margin-bottom: 1.75rem !important;
    }

    .hero-section .small.text-uppercase {
        margin-bottom: 1.5rem !important;
    }

    .hero__visual {
        padding-top: 5rem;
    }

    /* Floating buttons */
    .floating-whatsapp {
        padding: 10px 15px;
        max-width: 250px;
    }

    .floating-whatsapp-title {
        font-size: 0.85rem;
    }

    .floating-whatsapp-subtitle {
        font-size: 0.7rem;
    }

    .floating-whatsapp-logo {
        font-size: 1.5rem;
    }

    .floating-buttons {
        bottom: 20px;
        right: 20px;
    }

    .duel-premium {
        padding: 1rem !important;
    }

    .contrast-card-icon {
        float: left !important;
        padding-right: 1rem !important;
        margin-bottom: 0 !important;
    }
}

/* Extra-small: 360–390px */
@media (max-width: 420px) {
    .hero-section {
        padding: 75px 0 48px;
    }

    .hero-title {
        font-size: clamp(1.6rem, 7vw, 2.4rem) !important;
    }

    .section-padding {
        padding: 48px 0;
    }

    .section-padding-md {
        padding: 36px 0;
    }

    .duel-option {
        min-width: 0;
    }
}

.animate-pulse {
    animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }

    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

/* Smooth Scrolling Offset for Fixed Header */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

/* Courses Marquee Section */
.marquee-wrapper {
    overflow: hidden;
    white-space: nowrap;
    position: relative;
}

.marquee-content {
    display: inline-block;
    animation: marquee 30s linear infinite;
}

.marquee-item {
    display: inline-flex;
    align-items: center;
    margin: 0 3rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-size: 1.1rem;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.marquee-item:hover {
    opacity: 1;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

/* Carousel Controls Premium */
.carousel-control-prev-icon,
.carousel-control-next-icon {
    filter: invert(1);
}

.carousel-indicators [data-bs-target] {
    background-color: var(--color-gold);
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

/* Cards & Hover Effects */
.hover-lift {
    transition:
        transform var(--t-base),
        box-shadow var(--t-base);
}

.hover-lift:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-3);
}

/* Authority Section */
.authority-img-wrapper {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
}

.authority-img-wrapper::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid var(--color-gold);
    transform: translate(15px, 15px);
    z-index: -1;
    border-radius: 8px;
}

/* Google Reviews Section */
.google-badge {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
}

.google-g-icon {
    width: 24px;
    height: 24px;
}

.review-card {
    background: #fff;
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow-1);
    height: 100%;
    transition:
        transform var(--t-base),
        box-shadow var(--t-base);
    border: 1px solid #f0f0f0;
}

.review-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2);
}

.review-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.review-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #eee;
    margin-right: 15px;
    object-fit: cover;
}

.review-stars {
    color: #FFD700;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.review-text {
    font-size: 0.95rem;
    color: #444;
    line-height: 1.6;
}

.review-google-logo {
    width: 20px;
    opacity: 0.8;
}

/* Utilities */
.opacity-90 {
    opacity: 0.9;
}

.opacity-75 {
    opacity: 0.75;
}

.opacity-50 {
    opacity: 0.5;
}

.opacity-10 {
    opacity: 0.1;
}

.bg-dark-blue {
    background-color: var(--color-dark-blue);
}

/* Animations */
.animate-fade-up {
    opacity: 0;
    animation: fadeUp 0.8s ease-out forwards;
}

.delay-100 {
    animation-delay: 0.1s;
}

.delay-200 {
    animation-delay: 0.2s;
}

.delay-300 {
    animation-delay: 0.3s;
}

.delay-400 {
    animation-delay: 0.4s;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Sections */
.section-padding {
    padding: 96px 0;
}

.section-padding-md {
    padding: 72px 0;
}

.border-gold {
    border: 1px solid var(--color-gold) !important;
}

/* Cards & Hover Effects (second declaration — normalize) */
.hover-lift {
    transition:
        transform var(--t-base),
        box-shadow var(--t-base);
}

.hover-lift:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-3) !important;
}

/* Portfolio Grid */
.portfolio-item {
    cursor: pointer;
    border-radius: 12px;
    aspect-ratio: 4 / 3;
    background-color: var(--color-dark-blue);
    display: block;
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-item:hover img {
    transform: scale(1.1);
}

.portfolio-overlay {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 2;
}

/* Modal Gallery Normalization */
#portfolioGallery .card {
    aspect-ratio: 3 / 2;
    background-color: #000;
}

#portfolioGallery img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

/* Accordion Customization */
.accordion-button {
    background-color: transparent;
    color: var(--color-black);
    box-shadow: none;
}

.accordion-button:not(.collapsed) {
    color: var(--color-gold-dark);
    background-color: transparent;
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: none;
    border-color: var(--color-gold);
}

/* Forms */
.form-control:focus,
.form-select:focus {
    border-color: var(--color-gold);
    box-shadow: 0 0 0 0.25rem rgba(212, 175, 55, 0.25);
}

/* Scroll Animation Trigger Class */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Misc */
.icon-circle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.hover-gold:hover {
    color: var(--color-gold) !important;
}

/* =========================================
   MQL Optimization Styles (v8)
   ========================================= */

/* Emotional Filter (Duel) - Provocative V2 */
.emotional-duel-container {
    perspective: 1000px;
}

.duel-option {
    flex: 1;
    min-width: 280px;
    max-width: 450px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid transparent;
}

/* Option 1: Basic (Desvalorizada) */
.duel-basic {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.05);
}

.duel-basic:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: scale(0.98);
    opacity: 0.8;
}

.hover-grayscale {
    filter: grayscale(0.5);
    transition: filter 0.3s ease;
}

.duel-basic:hover .hover-grayscale {
    filter: grayscale(1);
}

/* Option 2: Premium (Dominante) */
.duel-premium {
    background: linear-gradient(145deg, rgba(20, 20, 20, 0.9), rgba(30, 30, 35, 0.95));
    border-color: var(--color-gold);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5),
        0 0 20px rgba(212, 175, 55, 0.15),
        inset 0 0 10px rgba(212, 175, 55, 0.05);
    z-index: 10;
    padding: 3rem;
}

.duel-premium:hover {
    transform: scale(1.03) translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6),
        0 0 30px rgba(212, 175, 55, 0.3),
        inset 0 0 15px rgba(212, 175, 55, 0.1);
}

.shadow-gold {
    box-shadow: 0 5px 15px rgba(212, 175, 55, 0.3);
}

.hover-scale {
    transition:
        transform var(--t-base),
        box-shadow var(--t-base);
}

.hover-scale:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-3);
}

.animate-pulse-slow {
    animation: pulseGlow 3s infinite;
}

@keyframes pulseGlow {
    0% {
        filter: drop-shadow(0 0 2px rgba(212, 175, 55, 0.4));
        transform: scale(1);
    }

    50% {
        filter: drop-shadow(0 0 8px rgba(212, 175, 55, 0.7));
        transform: scale(1.05);
    }

    100% {
        filter: drop-shadow(0 0 2px rgba(212, 175, 55, 0.4));
        transform: scale(1);
    }
}

/* Investment Block */
.bg-gold-gradient {
    background: radial-gradient(circle at center, rgba(212, 175, 55, 0.3) 0%, transparent 70%);
}

.border-gold-weak {
    border-color: rgba(212, 175, 55, 0.2) !important;
}

/* Form Utilities */
.cursor-pointer {
    cursor: pointer;
}

.hover-gold-border {
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.hover-gold-border:hover {
    border-color: var(--color-gold) !important;
    background-color: rgba(212, 175, 55, 0.05) !important;
}

.form-check-input:checked+.form-check-label {
    color: var(--color-gold);
}

.form-check-input:checked~.form-check-label strong {
    color: var(--color-gold);
}

.form-check-input {
    background-color: transparent;
    border-color: rgba(255, 255, 255, 0.3);
}

.form-check-input:checked {
    background-color: var(--color-gold);
    border-color: var(--color-gold);
}

/* Footer */
.site-footer {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: 64px 0 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
    text-align: left;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 32px;
    }
}

.footer-brand {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    color: var(--color-gold);
    display: block;
    margin-bottom: 8px;
}

.footer-tagline {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-bottom: 0;
}

.footer-info {
    font-size: 0.85rem;
    opacity: 0.6;
    line-height: 1.6;
}

.footer-copy {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
    font-size: 0.8rem;
    opacity: 0.4;
}