/* =====================================================
   FILHOS DE MARTE - RELÍQUIAS DA VERDADE
   Landing Page - Styles
   Pure CSS3 - No frameworks
   ===================================================== */

/* ===== CSS VARIABLES ===== */
:root {
    --fdm-mars-red: #8B2500;
    --fdm-mars-orange: #A0522D;
    --fdm-burnt-orange: #CC5500;
    --fdm-deep-black: #0a0a0a;
    --fdm-charcoal: #1a1a1a;
    --fdm-dark-grey: #2d2d2d;
    --fdm-medium-grey: #4a4a4a;
    --fdm-gold: #C9A227;
    --fdm-copper: #B87333;
    --fdm-ancient-gold: #D4A84B;
    --fdm-text-light: #e8e4dc;
    --fdm-text-muted: #9a9590;
    --fdm-font-display: 'Cinzel', serif;
    --fdm-font-body: 'Cormorant Garamond', serif;
    --fdm-font-title: 'Barlow Condensed', sans-serif;
    --fdm-font-subtitle: 'Ruda', sans-serif;
    --fdm-font-body: 'Cormorant Garamond', serif;
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--fdm-deep-black);
    color: var(--fdm-text-light);
    font-family: var(--fdm-font-body);
    font-size: 18px;
    line-height: 1.8;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--fdm-font-display);
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

/* ===== UTILITY CLASSES ===== */
.fdm-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

.fdm-fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fdm-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== HERO SECTION ===== */
.fdm-hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.fdm-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(
            to bottom,
            rgba(10, 10, 10, 0.3) 0%,
            rgba(10, 10, 10, 0.5) 50%,
            rgba(10, 10, 10, 0.95) 100%
        ),
        url('https://images.unsplash.com/photo-1614728894747-a83421e2b9c9?w=1920&q=80') center/cover no-repeat;
    filter: saturate(1.2) contrast(1.1);
}

.fdm-hero-dust {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 30% 70%, rgba(139, 37, 0, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 30%, rgba(160, 82, 45, 0.1) 0%, transparent 40%);
    pointer-events: none;
}

.fdm-hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 40px;
}

.fdm-hero-subtitle-top {
    font-family: var(--fdm-font-body);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--fdm-text-light);
    margin-bottom: 20px;
    opacity: 0;
    animation: fdm-fadeInUp 1s ease 0.3s forwards;
}

.fdm-hero-title {
    font-family: var(--fdm-font-title);
    font-size: clamp(48px, 10vw, 120px);
    font-weight: 700;
    letter-spacing: 0.25em;
    line-height: 1.05;
    margin-bottom: 20px;
    color: var(fdm-text-light);
}

.fdm-hero-subtitle {
    font-family: var(--fdm-font-subtitle);
    font-size: clamp(18px, 3vw, 28px);
    font-weight: 500;
    letter-spacing: 0.35em;
    color: var(fdm-text-light);
    margin-bottom: 40px;
}


.fdm-hero-tagline {
    font-family: var(--fdm-font-body);
    font-size: clamp(18px, 2.5vw, 24px);
    font-style: italic;
    font-weight: 400;
    color: var(--fdm-text-light);
    max-width: 600px;
    margin: 0 auto 50px;
    line-height: 1.6;
    opacity: 0;
    animation: fdm-fadeInUp 1s ease 0.9s forwards;
}

.fdm-hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    opacity: 0;
    animation: fdm-fadeInUp 1s ease 1.1s forwards;
}

.fdm-btn {
    font-family: var(--fdm-font-display);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    padding: 18px 40px;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
    display: inline-block;
}

.fdm-btn-primary {
    background: linear-gradient(135deg, var(--fdm-mars-red), var(--fdm-burnt-orange));
    color: var(--fdm-text-light);
    box-shadow: 0 4px 30px rgba(139, 37, 0, 0.4);
}

.fdm-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 40px rgba(139, 37, 0, 0.6);
}

.fdm-btn-secondary {
    background: transparent;
    color: var(--fdm-text-light);
    border: 1px solid var(--fdm-medium-grey);
}

.fdm-btn-secondary:hover {
    border-color: var(--fdm-copper);
    color: var(--fdm-copper);
}

.fdm-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    opacity: 0;
    animation: fdm-fadeIn 1s ease 1.5s forwards, fdm-float 2s ease-in-out infinite 1.5s;
}

.fdm-scroll-indicator span {
    font-size: 11px;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--fdm-text-muted);
}

.fdm-scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--fdm-copper), transparent);
}

/* ===== ABOUT SECTION ===== */
.fdm-about {
    padding: 150px 0;
    background: linear-gradient(180deg, var(--fdm-deep-black) 0%, var(--fdm-charcoal) 100%);
    position: relative;
}

.fdm-about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
}

.fdm-about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.fdm-section-label {
    font-family: var(--fdm-font-subtitle);
}


.fdm-section-title {
    font-size: clamp(32px, 5vw, 48px);
    margin-bottom: 40px;
    line-height: 1.2;
}

.fdm-about-text {
    font-size: 20px;
    line-height: 2;
    color: var(--fdm-text-light);
}

.fdm-about-text p {
    margin-bottom: 30px;
}

.fdm-quote {
    position: relative;
    padding: 40px;
    background: linear-gradient(135deg, rgba(139, 37, 0, 0.1), rgba(184, 115, 51, 0.05));
    border-left: 2px solid var(--fdm-copper);
}

.fdm-quote-text {
    font-size: 24px;
    font-style: italic;
    line-height: 1.8;
    color: var(--fdm-text-light);
    margin-bottom: 20px;
}

.fdm-quote-author {
    font-size: 14px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--fdm-copper);
}

/* ===== UNIVERSE SECTION ===== */
.fdm-universe {
    padding: 150px 0;
    background: var(--fdm-charcoal);
    position: relative;
}

.fdm-universe-header {
    text-align: center;
    margin-bottom: 80px;
}

.fdm-universe-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.fdm-universe-card {
    position: relative;
    padding: 50px 30px;
    background: linear-gradient(180deg, var(--fdm-dark-grey), var(--fdm-charcoal));
    border: 1px solid var(--fdm-dark-grey);
    text-align: center;
    transition: all 0.5s ease;
    overflow: hidden;
}

.fdm-universe-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--fdm-copper), transparent);
    transform: scaleX(0);
    transition: transform 0.5s ease;
}

.fdm-universe-card:hover::before {
    transform: scaleX(1);
}

.fdm-universe-card:hover {
    transform: translateY(-10px);
    border-color: var(--fdm-medium-grey);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.fdm-card-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 30px;
    position: relative;
}

.fdm-card-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--fdm-copper);
    stroke-width: 1;
    fill: none;
}

.fdm-card-title {
    font-size: 16px;
    letter-spacing: 0.2em;
    margin-bottom: 20px;
    color: var(--fdm-text-light);
}

.fdm-card-text {
    font-size: 16px;
    line-height: 1.8;
    color: var(--fdm-text-light);
}

.fdm-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin: 80px 0;
}

.fdm-divider-line {
    width: 100px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--fdm-medium-grey));
}

.fdm-divider-line:last-child {
    background: linear-gradient(90deg, var(--fdm-medium-grey), transparent);
}

.fdm-divider-symbol {
    width: 12px;
    height: 12px;
    border: 1px solid var(--fdm-copper);
    transform: rotate(45deg);
}

/* ===== WHY READ SECTION ===== */
.fdm-why {
    padding: 150px 0;
    background: var(--fdm-deep-black);
    position: relative;
}

.fdm-why::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(139, 37, 0, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(184, 115, 51, 0.05) 0%, transparent 40%);
    pointer-events: none;
}

.fdm-why-header {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
}

.fdm-why-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px 80px;
    position: relative;
}

.fdm-why-item {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

.fdm-why-number {
    font-family: var(--fdm-font-display);
    font-size: 48px;
    font-weight: 300;
    color: var(--fdm-copper);
    opacity: 0.5;
    line-height: 1;
}

.fdm-why-content h3 {
    font-size: 18px;
    letter-spacing: 0.15em;
    margin-bottom: 15px;
    color: var(--fdm-ancient-gold);
}

.fdm-why-content p {
    font-size: 17px;
    line-height: 1.8;
    color: var(--fdm-text-light);
}

/* ===== AUTHOR SECTION ===== */
.fdm-author {
    padding: 150px 0;
    background: linear-gradient(180deg, var(--fdm-deep-black) 0%, var(--fdm-charcoal) 100%);
}

.fdm-author-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.fdm-author-text {
    font-size: 20px;
    line-height: 2;
    color: var(--fdm-text-muted);
}

.fdm-author-text p {
    margin-bottom: 30px;
}

.fdm-author-signature {
    font-family: var(--fdm-font-body);
    font-size: 28px;
    font-style: italic;
    color: var(--fdm-copper);
    margin-top: 40px;
}

/* ===== FINAL CTA SECTION ===== */
.fdm-final-cta {
    position: relative;
    padding: 200px 0;
    overflow: hidden;
}

.fdm-final-cta-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(
            to bottom,
            rgba(10, 10, 10, 0.9) 0%,
            rgba(10, 10, 10, 0.7) 50%,
            rgba(10, 10, 10, 0.95) 100%
        ),
        url('https://images.unsplash.com/photo-1545156521-77bd85671d30?w=1920&q=80') center/cover no-repeat;
    filter: saturate(1.3);
}

.fdm-final-cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.fdm-final-cta-title {
    font-size: clamp(28px, 5vw, 48px);
    margin-bottom: 20px;
    line-height: 1.3;
}

.fdm-final-cta-subtitle {
    font-size: 20px;
    font-style: italic;
    color: var(--fdm-text-light);
    margin-bottom: 50px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.fdm-btn-large {
    padding: 25px 60px;
    font-size: 14px;
}

/* ===== FOOTER ===== */
.fdm-footer {
    padding: 60px 0;
    background: var(--fdm-deep-black);
    border-top: 1px solid var(--fdm-dark-grey);
    text-align: center;
}

.fdm-footer-text {
    font-size: 13px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--fdm-text-light);
}

/* ===== ANIMATIONS ===== */
@keyframes fdm-fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fdm-fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fdm-float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .fdm-about-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .fdm-universe-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .fdm-why-grid {
        gap: 40px 60px;
    }
}

@media (max-width: 768px) {
    .fdm-container {
        padding: 0 25px;
    }

    .fdm-hero-content {
        padding: 20px;
    }

    .fdm-hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .fdm-btn {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }

    .fdm-universe-grid {
        grid-template-columns: 1fr;
    }

    .fdm-why-grid {
        grid-template-columns: 1fr;
    }

    .fdm-why-item {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .fdm-about,
    .fdm-universe,
    .fdm-why,
    .fdm-author {
        padding: 100px 0;
    }

    .fdm-final-cta {
        padding: 120px 0;
    }

    .fdm-quote {
        padding: 30px 20px;
    }

    .fdm-quote-text {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .fdm-hero-subtitle-top {
        font-size: 11px;
        letter-spacing: 0.3em;
    }

    .fdm-section-title {
        font-size: 28px;
    }

    .fdm-card-title {
        font-size: 14px;
    }

    .fdm-btn-large {
        padding: 20px 40px;
    }

}