/* ============================================================
   DoomScape — doomscape.net
   Dark, element-themed landing page
   ============================================================ */

:root {
    --bg: #0a0a10;
    --bg-alt: #0e0e17;
    --panel: #14141f;
    --panel-2: #1a1a2a;
    --line: rgba(255, 255, 255, 0.07);
    --text: #e8e6f0;
    --text-dim: #9d9ab0;

    /* Element palette */
    --el-fire: #ff5a2c;
    --el-ice: #7ed6ff;
    --el-lightning: #ffd93d;
    --el-poison: #9dff4a;
    --el-earth: #c4854d;
    --el-energy: #ff9f1c;
    --el-radiation: #39ff88;
    --el-blood: #e63946;
    --el-spirit: #b18cff;
    --el-ethereal: #6ee7e7;
    --el-holy: #ffe9a8;
    --el-utility: #9ca3af;

    --font-display: 'Cinzel', serif;
    --font-body: 'Inter', system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

img { max-width: 100%; }
a { color: inherit; text-decoration: none; }

::selection { background: rgba(255, 90, 44, 0.4); }

/* Subtle global texture */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -10%, rgba(120, 60, 200, 0.08), transparent),
        repeating-linear-gradient(0deg, transparent 0 2px, rgba(255,255,255,0.004) 2px 4px);
}

/* ============ Gradient text helpers ============ */
.grad {
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    background-size: 200% auto;
    animation: gradShift 6s ease-in-out infinite alternate;
}
.grad-fire     { background-image: linear-gradient(100deg, #ff5a2c, #ffd93d, #ff5a2c); }
.grad-ice      { background-image: linear-gradient(100deg, #7ed6ff, #e0f7ff, #7ed6ff); }
.grad-holy     { background-image: linear-gradient(100deg, #ffe9a8, #fff7e0, #d4af37); }
.grad-energy   { background-image: linear-gradient(100deg, #ff9f1c, #ffe08a, #ff9f1c); }
.grad-spirit   { background-image: linear-gradient(100deg, #b18cff, #e6d9ff, #b18cff); }
.grad-blood    { background-image: linear-gradient(100deg, #e63946, #ff8a7a, #e63946); }

@keyframes gradShift {
    from { background-position: 0% center; }
    to   { background-position: 100% center; }
}

/* ============================================================
   NAV
   ============================================================ */
#nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    transition: background 0.35s ease, box-shadow 0.35s ease;
}
#nav.scrolled {
    background: rgba(10, 10, 16, 0.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 1px 0 var(--line), 0 10px 40px rgba(0,0,0,0.5);
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.9rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-display);
    font-weight: 900;
    font-size: 1.25rem;
    letter-spacing: 0.08em;
}
.nav-logo em {
    font-style: normal;
    background-image: linear-gradient(100deg, #ff5a2c, #ffd93d);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
}
.nav-logo-img {
    width: 34px; height: 34px;
    object-fit: contain;
    filter: drop-shadow(0 0 6px rgba(255, 233, 168, 0.5));
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 1.8rem;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-dim);
}
.nav-links a { transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
    color: var(--text) !important;
    padding: 0.45rem 1.1rem;
    border: 1px solid rgba(255, 90, 44, 0.5);
    border-radius: 999px;
    background: rgba(255, 90, 44, 0.1);
    transition: background 0.2s, box-shadow 0.2s;
}
.nav-cta:hover {
    background: rgba(255, 90, 44, 0.25);
    box-shadow: 0 0 18px rgba(255, 90, 44, 0.35);
}
.nav-burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: 0;
    cursor: pointer;
    padding: 6px;
}
.nav-burger span {
    width: 24px; height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.25s, opacity 0.25s;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    isolation: isolate;
}
#particles {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}
#isoScene {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: -3;
    opacity: 0.6;
    /* Ghost the scene where it passes behind the hero text so it stays readable */
    -webkit-mask-image: radial-gradient(ellipse 52% 46% at 50% 53%, rgba(0,0,0,0.22) 30%, #000 80%);
            mask-image: radial-gradient(ellipse 52% 46% at 50% 53%, rgba(0,0,0,0.22) 30%, #000 80%);
}
.hero-glow {
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(ellipse 60% 45% at 50% 60%, rgba(255, 90, 44, 0.13), transparent 70%),
        radial-gradient(ellipse 45% 35% at 30% 30%, rgba(177, 140, 255, 0.1), transparent 70%),
        radial-gradient(ellipse 45% 35% at 72% 25%, rgba(126, 214, 255, 0.08), transparent 70%);
    animation: heroBreathe 9s ease-in-out infinite alternate;
}
@keyframes heroBreathe {
    from { opacity: 0.7; transform: scale(1); }
    to   { opacity: 1;   transform: scale(1.06); }
}
.hero-content {
    padding: 6rem 1.5rem 4rem;
    max-width: 900px;
}
.hero-kicker {
    font-size: 0.95rem;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 1rem;
}
.hero-title {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: clamp(3.2rem, 11vw, 7.5rem);
    line-height: 1.02;
    letter-spacing: 0.05em;
    text-shadow: 0 0 60px rgba(255, 90, 44, 0.25);
}
.hero-title-accent {
    background-image: linear-gradient(100deg, #ff5a2c 10%, #ffd93d 45%, #ff5a2c 90%);
    background-size: 200% auto;
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    animation: gradShift 5s ease-in-out infinite alternate;
}
.hero-sub {
    margin: 1.6rem auto 0;
    max-width: 620px;
    font-size: 1.12rem;
    color: var(--text-dim);
}
.hero-sub strong { color: var(--text); font-weight: 600; }
.hero-actions {
    margin-top: 2.4rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}
.hero-fade {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 180px;
    background: linear-gradient(to bottom, transparent, var(--bg));
    pointer-events: none;
}

.btn {
    display: inline-block;
    padding: 0.85rem 2.1rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.02em;
    transition: transform 0.2s, box-shadow 0.3s, background 0.3s;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
    background: linear-gradient(100deg, #ff5a2c, #ff8a3d);
    color: #1b0a02;
    box-shadow: 0 0 25px rgba(255, 90, 44, 0.35), inset 0 1px 0 rgba(255,255,255,0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 45px rgba(255, 90, 44, 0.55), inset 0 1px 0 rgba(255,255,255,0.3);
}
.btn-ghost {
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(4px);
}
.btn-ghost:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.45);
    box-shadow: 0 0 25px rgba(255, 255, 255, 0.1);
}

.scroll-hint {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    width: 26px; height: 42px;
    border: 2px solid rgba(255, 255, 255, 0.25);
    border-radius: 14px;
}
.scroll-hint span {
    position: absolute;
    top: 7px; left: 50%;
    width: 4px; height: 8px;
    margin-left: -2px;
    border-radius: 2px;
    background: var(--text-dim);
    animation: scrollHint 1.8s ease-in-out infinite;
}
@keyframes scrollHint {
    0%   { transform: translateY(0); opacity: 1; }
    70%  { transform: translateY(14px); opacity: 0; }
    100% { transform: translateY(0); opacity: 0; }
}

/* ============================================================
   SECTIONS
   ============================================================ */
.section {
    position: relative;
    padding: 6.5rem 1.5rem;
    z-index: 1;
}
.section-alt {
    background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.015), transparent);
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}
.section-inner {
    max-width: 1000px;
    margin: 0 auto;
}
.section-inner.wide { max-width: 1250px; }
.section-inner.center { text-align: center; }
.section-kicker {
    font-size: 0.82rem;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: var(--el-fire);
    margin-bottom: 0.7rem;
    font-weight: 600;
}
.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.9rem, 4.5vw, 3rem);
    font-weight: 800;
    letter-spacing: 0.03em;
    margin-bottom: 1.1rem;
    line-height: 1.15;
}
.section-lead {
    color: var(--text-dim);
    font-size: 1.08rem;
    max-width: 720px;
    margin-bottom: 2.8rem;
}
.center .section-lead { margin-left: auto; margin-right: auto; }

/* ============ Stats ============ */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.2rem;
}
.stat-card {
    --accent: #fff;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 1.8rem 1.4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 15%; right: 15%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.8;
}
.stat-card:hover {
    transform: translateY(-4px);
    border-color: color-mix(in srgb, var(--accent) 40%, transparent);
    box-shadow: 0 12px 40px -12px color-mix(in srgb, var(--accent) 45%, transparent);
}
.stat-num {
    font-family: var(--font-display);
    font-size: 2.6rem;
    font-weight: 900;
    color: var(--accent);
    text-shadow: 0 0 20px color-mix(in srgb, var(--accent) 55%, transparent);
    line-height: 1.1;
}
.stat-label {
    margin-top: 0.4rem;
    color: var(--text-dim);
    font-size: 0.95rem;
    font-weight: 500;
}
.stat-label small { font-size: 0.78rem; opacity: 0.75; }

/* ============ Elements ring ============ */
.element-ring {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.4rem 1.6rem;
    padding: 1rem 0 0.5rem;
}
.element-orb {
    --c: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.7rem;
    width: 108px;
    cursor: default;
}
.element-orb .orb {
    width: 74px; height: 74px;
    border-radius: 50%;
    position: relative;
    background:
        radial-gradient(circle at 32% 30%, color-mix(in srgb, var(--c) 85%, white), var(--c) 42%, color-mix(in srgb, var(--c) 30%, #000) 100%);
    box-shadow:
        0 0 22px color-mix(in srgb, var(--c) 45%, transparent),
        inset 0 -6px 14px rgba(0,0,0,0.4);
    animation: orbFloat 4.5s ease-in-out infinite;
    animation-delay: var(--d, 0s);
    transition: transform 0.3s, box-shadow 0.3s;
}
.element-orb .orb::after {
    content: '';
    position: absolute;
    inset: -9px;
    border-radius: 50%;
    border: 1px solid color-mix(in srgb, var(--c) 35%, transparent);
    animation: orbPulse 3s ease-out infinite;
    animation-delay: var(--d, 0s);
}
.element-orb:hover .orb {
    transform: scale(1.18);
    box-shadow:
        0 0 45px color-mix(in srgb, var(--c) 80%, transparent),
        inset 0 -6px 14px rgba(0,0,0,0.4);
}
.element-orb .el-name {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: color-mix(in srgb, var(--c) 75%, white);
}
@keyframes orbFloat {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(-8px); }
}
@keyframes orbPulse {
    0%   { transform: scale(0.9); opacity: 0.9; }
    100% { transform: scale(1.45); opacity: 0; }
}

/* ============ Tower filters ============ */
.tower-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    margin-bottom: 2.2rem;
}
.tf-chip {
    --c: var(--el-utility);
    border: 1px solid color-mix(in srgb, var(--c) 35%, transparent);
    background: color-mix(in srgb, var(--c) 8%, transparent);
    color: color-mix(in srgb, var(--c) 80%, white);
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.42rem 1rem;
    border-radius: 999px;
    cursor: pointer;
    transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
}
.tf-chip:hover { transform: translateY(-1px); background: color-mix(in srgb, var(--c) 18%, transparent); }
.tf-chip.active {
    background: color-mix(in srgb, var(--c) 26%, transparent);
    box-shadow: 0 0 16px color-mix(in srgb, var(--c) 35%, transparent);
    color: white;
}

/* ============ Tower grid ============ */
.tower-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(235px, 1fr));
    gap: 1.3rem;
}
.tower-card {
    --c: var(--el-utility);
    position: relative;
    background: linear-gradient(165deg, var(--panel-2), var(--panel) 60%);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 1.3rem 1.2rem 1.4rem;
    overflow: hidden;
    transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.3, 1), box-shadow 0.35s, border-color 0.35s, opacity 0.3s;
    transform-style: preserve-3d;
}
.tower-card.hidden { display: none; }
.tower-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 90% 55% at 50% -10%, color-mix(in srgb, var(--c) 22%, transparent), transparent 70%);
    opacity: 0;
    transition: opacity 0.35s;
    pointer-events: none;
}
.tower-card:hover {
    transform: translateY(-7px);
    border-color: color-mix(in srgb, var(--c) 45%, transparent);
    box-shadow:
        0 18px 50px -15px color-mix(in srgb, var(--c) 50%, transparent),
        0 4px 18px rgba(0,0,0,0.5);
}
.tower-card:hover::before { opacity: 1; }
.tower-img-wrap {
    height: 165px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.9rem;
    position: relative;
}
.tower-img-wrap::after {
    content: '';
    position: absolute;
    bottom: 4px; left: 50%;
    transform: translateX(-50%);
    width: 110px; height: 16px;
    border-radius: 50%;
    background: radial-gradient(ellipse, color-mix(in srgb, var(--c) 40%, transparent), transparent 70%);
    filter: blur(4px);
    transition: width 0.35s, opacity 0.35s;
}
.tower-card:hover .tower-img-wrap::after { width: 140px; }
.tower-img {
    max-height: 100%;
    max-width: 82%;
    object-fit: contain;
    filter: drop-shadow(0 10px 18px rgba(0,0,0,0.55));
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.3, 1);
}
.tower-card:hover .tower-img { transform: scale(1.09) translateY(-4px); }
.tower-el-badge {
    position: absolute;
    top: 0.9rem; right: 0.9rem;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.22rem 0.65rem;
    border-radius: 999px;
    color: color-mix(in srgb, var(--c) 85%, white);
    background: color-mix(in srgb, var(--c) 14%, transparent);
    border: 1px solid color-mix(in srgb, var(--c) 40%, transparent);
}
.tower-name {
    font-family: var(--font-display);
    font-size: 1.18rem;
    font-weight: 800;
    letter-spacing: 0.03em;
    margin-bottom: 0.45rem;
    color: color-mix(in srgb, var(--c) 30%, white);
}
.tower-desc {
    font-size: 0.87rem;
    color: var(--text-dim);
    line-height: 1.55;
}
.tower-desc li { margin-left: 1.05rem; margin-bottom: 0.15rem; }

/* ============ How to play steps ============ */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.3rem;
    margin-top: 2.5rem;
}
.step {
    --accent: #fff;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 1.7rem 1.5rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.step:hover {
    transform: translateY(-4px);
    border-color: color-mix(in srgb, var(--accent) 35%, transparent);
    box-shadow: 0 14px 40px -14px color-mix(in srgb, var(--accent) 40%, transparent);
}
.step-num {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 900;
    color: color-mix(in srgb, var(--accent) 80%, white);
    opacity: 0.9;
    text-shadow: 0 0 18px color-mix(in srgb, var(--accent) 50%, transparent);
    margin-bottom: 0.5rem;
    line-height: 1;
}
.step h3 {
    font-size: 1.12rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.step p { color: var(--text-dim); font-size: 0.93rem; }

/* ============ Features ============ */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.3rem;
    margin-top: 2.5rem;
}
.feature {
    --accent: #fff;
    padding: 1.6rem 1.5rem;
    border-radius: 16px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-left: 3px solid color-mix(in srgb, var(--accent) 65%, transparent);
    transition: transform 0.3s, box-shadow 0.3s;
}
.feature:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 40px -14px color-mix(in srgb, var(--accent) 40%, transparent);
}
.feature h3 {
    font-size: 1.08rem;
    margin-bottom: 0.45rem;
    color: color-mix(in srgb, var(--accent) 45%, white);
}
.feature p { color: var(--text-dim); font-size: 0.93rem; }

/* ============ CTA ============ */
.section-cta {
    text-align: center;
    overflow: hidden;
    position: relative;
}
.cta-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 55% 65% at 50% 100%, rgba(230, 57, 70, 0.14), transparent 70%);
    pointer-events: none;
}

/* ============ Footer ============ */
footer {
    border-top: 1px solid var(--line);
    padding: 3rem 1.5rem;
    background: #07070c;
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.footer-links {
    display: flex;
    gap: 1.6rem;
    color: var(--text-dim);
    font-size: 0.9rem;
}
.footer-links a:hover { color: var(--text); }
.footer-copy { color: #55536a; font-size: 0.85rem; }

/* ============ Scroll reveal ============ */
.reveal {
    opacity: 0;
    transform: translateY(26px);
    transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.8, 0.3, 1);
}
.reveal.d1 { transition-delay: 0.1s; }
.reveal.d2 { transition-delay: 0.2s; }
.reveal.d3 { transition-delay: 0.3s; }
.reveal.d4 { transition-delay: 0.42s; }
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
    .reveal { opacity: 1; transform: none; }
}

/* ============ Responsive ============ */
@media (max-width: 780px) {
    .nav-links {
        position: fixed;
        top: 58px; left: 0; right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(10, 10, 16, 0.97);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--line);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
    }
    .nav-links.open { max-height: 400px; }
    .nav-links a {
        padding: 1rem 1.5rem;
        width: 100%;
        text-align: center;
        border-top: 1px solid var(--line);
    }
    .nav-cta { border-radius: 0; border-left: 0; border-right: 0; background: rgba(255,90,44,0.12); }
    .nav-burger { display: flex; }
    .nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-burger.open span:nth-child(2) { opacity: 0; }
    .nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .section { padding: 4.5rem 1.2rem; }
    .element-orb { width: 84px; }
    .element-orb .orb { width: 58px; height: 58px; }
}