/* ============================================
   IWPG — About Page Styles
   ============================================ */

/* ---- About Hero ---- */
.about-hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 8rem 2rem 4rem;
    text-align: center;
}

.about-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 50% 60% at 50% 40%, rgba(0, 255, 136, 0.06) 0%, transparent 70%),
        radial-gradient(circle at 20% 80%, rgba(0, 255, 136, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 80% 20%, rgba(0, 255, 136, 0.03) 0%, transparent 40%);
    pointer-events: none;
}

.about-hero-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

/* ---- Skull Trace Animation ---- */
.skull-bg {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 0;
    opacity: 0.2;
}

.skull-svg {
    width: 650px;
    height: 1000px;
    max-width: 85vw;
    max-height: 90vh;
    filter: drop-shadow(0 0 15px rgba(0, 255, 136, 0.2));
}

.skull-trace {
    stroke: var(--accent);
    fill: none;
    stroke-dasharray: 2000;
    stroke-dashoffset: 2000;
}

/* 16s loop: draw in, hold, fade out, repeat */
.skull-trace-1 { stroke-dasharray: 3000; stroke-dashoffset: 3000; animation: skullDrawMain 16s ease infinite; }
.skull-trace-2 { stroke-dasharray: 300; stroke-dashoffset: 300; animation: skullDrawEyes 16s ease infinite; }
.skull-trace-3 { stroke-dasharray: 300; stroke-dashoffset: 300; animation: skullDrawEyes 16s ease infinite; animation-delay: 0.3s; }
.skull-trace-4 { stroke-dasharray: 200; stroke-dashoffset: 200; animation: skullDrawNose 16s ease infinite; }
.skull-trace-5 { stroke-dasharray: 800; stroke-dashoffset: 800; animation: skullDrawTeeth 16s ease infinite; }
.skull-trace-6 { stroke-dasharray: 500; stroke-dashoffset: 500; animation: skullDrawJaw 16s ease infinite; }
.skull-trace-7 { stroke-dasharray: 500; stroke-dashoffset: 500; animation: skullDrawBrow 16s ease infinite; }
.skull-trace-8 { stroke-dasharray: 200; stroke-dashoffset: 200; animation: skullDrawCheeks 16s ease infinite; }
.skull-trace-9 { stroke-dasharray: 200; stroke-dashoffset: 200; animation: skullDrawCracks 16s ease infinite; }

@keyframes skullDrawMain {
    0%        { stroke-dashoffset: 3000; opacity: 0; }
    3%        { opacity: 1; }
    50%       { stroke-dashoffset: 0; opacity: 1; }
    75%       { stroke-dashoffset: 0; opacity: 1; }
    90%       { stroke-dashoffset: 0; opacity: 0; }
    100%      { stroke-dashoffset: 3000; opacity: 0; }
}

.skull-trace-2, .skull-trace-3 { animation-name: skullDrawEyes; }
@keyframes skullDrawEyes {
    0%, 18%   { stroke-dashoffset: 400; opacity: 0; }
    20%       { opacity: 1; }
    45%       { stroke-dashoffset: 0; opacity: 1; }
    75%       { stroke-dashoffset: 0; opacity: 1; }
    90%       { stroke-dashoffset: 0; opacity: 0; }
    100%      { stroke-dashoffset: 400; opacity: 0; }
}

.skull-trace-4 { animation-name: skullDrawNose; }
@keyframes skullDrawNose {
    0%, 28%   { stroke-dashoffset: 200; opacity: 0; }
    30%       { opacity: 1; }
    48%       { stroke-dashoffset: 0; opacity: 1; }
    75%       { stroke-dashoffset: 0; opacity: 1; }
    90%       { stroke-dashoffset: 0; opacity: 0; }
    100%      { stroke-dashoffset: 200; opacity: 0; }
}


.skull-trace-6 { animation-name: skullDrawJaw; }
@keyframes skullDrawTeeth {
    0%, 40%   { stroke-dashoffset: 800; opacity: 0; }
    42%       { opacity: 1; }
    58%       { stroke-dashoffset: 0; opacity: 1; }
    75%       { stroke-dashoffset: 0; opacity: 1; }
    90%       { stroke-dashoffset: 0; opacity: 0; }
    100%      { stroke-dashoffset: 800; opacity: 0; }
}

@keyframes skullDrawJaw {
    0%, 32%   { stroke-dashoffset: 250; opacity: 0; }
    34%       { opacity: 1; }
    48%       { stroke-dashoffset: 0; opacity: 1; }
    75%       { stroke-dashoffset: 0; opacity: 1; }
    90%       { stroke-dashoffset: 0; opacity: 0; }
    100%      { stroke-dashoffset: 250; opacity: 0; }
}

.skull-trace-7 { animation-name: skullDrawBrow; }
@keyframes skullDrawBrow {
    0%, 15%   { stroke-dashoffset: 400; opacity: 0; }
    17%       { opacity: 1; }
    40%       { stroke-dashoffset: 0; opacity: 1; }
    75%       { stroke-dashoffset: 0; opacity: 1; }
    90%       { stroke-dashoffset: 0; opacity: 0; }
    100%      { stroke-dashoffset: 400; opacity: 0; }
}

.skull-trace-8 { animation-name: skullDrawCheeks; }
@keyframes skullDrawCheeks {
    0%, 40%   { stroke-dashoffset: 200; opacity: 0; }
    42%       { opacity: 1; }
    55%       { stroke-dashoffset: 0; opacity: 1; }
    75%       { stroke-dashoffset: 0; opacity: 1; }
    90%       { stroke-dashoffset: 0; opacity: 0; }
    100%      { stroke-dashoffset: 200; opacity: 0; }
}

.skull-trace-9 { animation-name: skullDrawCracks; }
@keyframes skullDrawCracks {
    0%, 42%   { stroke-dashoffset: 300; opacity: 0; }
    44%       { opacity: 1; }
    58%       { stroke-dashoffset: 0; opacity: 1; }
    75%       { stroke-dashoffset: 0; opacity: 1; }
    90%       { stroke-dashoffset: 0; opacity: 0; }
    100%      { stroke-dashoffset: 300; opacity: 0; }
}

/* Glow pulse on the whole SVG */
.skull-svg {
    animation: skullGlow 16s ease-in-out infinite;
}

@keyframes skullGlow {
    0%, 5%    { filter: drop-shadow(0 0 5px rgba(0, 255, 136, 0.1)); }
    55%       { filter: drop-shadow(0 0 25px rgba(0, 255, 136, 0.35)); }
    75%       { filter: drop-shadow(0 0 20px rgba(0, 255, 136, 0.3)); }
    90%, 100% { filter: drop-shadow(0 0 0px rgba(0, 255, 136, 0)); }
}

.about-hero-content {
    position: relative;
    max-width: 800px;
}

.about-hero-title {
    font-family: var(--font-display);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 1.5rem;
}

.about-hero-title span {
    display: block;
    font-size: clamp(2rem, 6vw, 4rem);
    letter-spacing: 4px;
}

.about-hero-accent {
    color: var(--accent);
    text-shadow: 0 0 40px rgba(0, 255, 136, 0.3);
    font-size: clamp(1.6rem, 4.5vw, 3rem) !important;
}

.about-hero-sub {
    font-family: var(--font-heading);
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto;
    line-height: 1.7;
}

.about-hero-fade {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to bottom, transparent, var(--bg-primary));
    pointer-events: none;
}

/* ---- About Sections ---- */
.about-section {
    padding: 6rem 0;
    position: relative;
}

.about-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

.about-heading {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    letter-spacing: 3px;
    margin-bottom: 2.5rem;
    line-height: 1.2;
}

/* ---- Origin Story ---- */
.origin {
    border-bottom: 1px solid var(--border);
}

.origin-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 4rem;
    align-items: start;
}

.origin-label .section-tag {
    margin-bottom: 1rem;
}

.origin-lead {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.origin-lead em {
    color: var(--accent);
    font-style: italic;
}

.origin-body p {
    color: var(--text-secondary);
    line-height: 1.85;
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
}

.origin-body strong {
    color: var(--accent);
    font-weight: 600;
}

/* ---- Philosophy / Game Loop ---- */
.philosophy {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.philosophy-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 4rem;
}

.philosophy-intro {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.philosophy-intro strong {
    color: var(--text-primary);
}

/* ---- Loop Vertical Scroll Slider ---- */
.loop-slider {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    gap: 4rem;
}

/* Sticky image panel — stays in view while text scrolls */
.loop-image-panel {
    position: relative;
}

.loop-image-wrap {
    position: sticky;
    top: 120px;
    aspect-ratio: 4/3;
    background: var(--bg-card);
    border: 1px solid var(--border);
    overflow: hidden;
    clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

.loop-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
    transform: scale(1.05);
}

.loop-img.active {
    opacity: 1;
    transform: scale(1);
}

/* Progress dots */
.loop-progress {
    position: absolute;
    bottom: 1.25rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
    z-index: 5;
}

.loop-progress-dot {
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.15);
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
    transition: all 0.4s;
}

.loop-progress-dot.active {
    background: var(--accent);
    box-shadow: 0 0 8px rgba(0, 255, 136, 0.5);
    transform: scale(1.3);
}

/* Scrolling text steps */
.loop-steps-panel {
    display: flex;
    flex-direction: column;
}

.loop-step-slide {
    padding: 8rem 0;
    border-bottom: 1px solid var(--border);
    opacity: 0.3;
    transition: opacity 0.5s ease, transform 0.5s ease;
    transform: translateY(10px);
}

.loop-step-slide:first-child {
    padding-top: 2rem;
}

.loop-step-slide:last-child {
    border-bottom: none;
    padding-bottom: 10rem;
}

.loop-step-slide.active {
    opacity: 1;
    transform: translateY(0);
}

.loop-step-slide .loop-num {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 900;
    color: rgba(0, 255, 136, 0.1);
    line-height: 1;
    margin-bottom: 0.5rem;
    transition: color 0.5s;
}

.loop-step-slide.active .loop-num {
    color: rgba(0, 255, 136, 0.2);
}

.loop-step-slide h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--text-muted);
    margin-bottom: 1rem;
    transition: color 0.5s;
}

.loop-step-slide.active h3 {
    color: var(--accent);
}

.loop-step-slide p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 0.75rem;
}

.loop-step-slide .loop-detail {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-top: 0.5rem;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.5s ease 0.15s, transform 0.5s ease 0.15s;
}

.loop-step-slide.active .loop-detail {
    opacity: 1;
    transform: translateY(0);
}

/* ---- Differentiators ---- */
.diff-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.diff-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 2.5rem 2rem;
    transition: all 0.3s;
    clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.diff-card:hover {
    border-color: rgba(0, 255, 136, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(0, 255, 136, 0.06);
}

.diff-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 900;
    color: rgba(0, 255, 136, 0.08);
    line-height: 1;
    margin-bottom: 0.75rem;
}

.diff-card h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.diff-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.75;
}

/* ---- Timeline ---- */
.timeline-section {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.timeline {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
    padding: 2rem 0;
}

.timeline-line {
    position: absolute;
    left: 80px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--accent), var(--accent), transparent);
    opacity: 0.2;
}

.timeline-item {
    display: flex;
    gap: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    align-items: flex-start;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-year {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent);
    min-width: 80px;
    text-align: right;
    padding-top: 0.25rem;
    position: relative;
}

.timeline-year::after {
    content: '';
    position: absolute;
    right: -1.35rem;
    top: 0.5rem;
    width: 10px;
    height: 10px;
    background: var(--accent);
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.4);
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 1.5rem 2rem;
    flex: 1;
    transition: all 0.3s;
}

.timeline-content:hover {
    border-color: rgba(0, 255, 136, 0.2);
    transform: translateX(4px);
}

.timeline-content h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.timeline-content p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ---- About CTA ---- */
.about-cta {
    padding: 5rem 0;
}

/* ---- Nav Active State ---- */
.nav-links a.active {
    color: var(--accent);
}

.nav-links a.active::after {
    width: 100%;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .diff-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .loop-slider {
        gap: 2.5rem;
    }
}

@media (max-width: 768px) {
    .about-hero {
        min-height: 60vh;
        padding: 6rem 1.25rem 3rem;
    }

    .about-hero-title span {
        font-size: 2.2rem;
    }

    .about-hero-accent {
        font-size: 1.6rem !important;
    }

    .about-hero-sub {
        font-size: 1rem;
    }

    .skull-svg {
        width: auto;
        max-width: 100vw;
    }

    .origin-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .origin-lead {
        font-size: 1.15rem;
    }

    .about-heading {
        font-size: 1.6rem;
    }

    .about-section {
        padding: 4rem 0;
    }

    .about-container {
        padding: 0 1.25rem;
    }

    .loop-slider {
        grid-template-columns: 1fr;
        gap: 0;
        padding: 0 1.25rem;
    }

    .loop-image-panel {
        order: -1;
    }

    .loop-image-wrap {
        position: relative;
        top: 0;
        margin-bottom: 2rem;
    }

    .loop-step-slide {
        padding: 2.5rem 0;
    }

    .loop-step-slide .loop-num {
        font-size: 2rem;
    }

    .loop-step-slide h3 {
        font-size: 1rem;
    }

    .loop-step-slide p {
        font-size: 0.9rem;
    }

    .philosophy-header {
        margin-bottom: 2rem;
    }

    .diff-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .diff-card {
        padding: 1.75rem 1.5rem;
    }

    .diff-number {
        font-size: 2rem;
    }

    .timeline {
        padding: 1rem 0;
    }

    .timeline-line {
        left: 50px;
    }

    .timeline-year {
        min-width: 50px;
        font-size: 0.75rem;
    }

    .timeline-item {
        gap: 1.5rem;
        margin-bottom: 2rem;
    }

    .timeline-content {
        padding: 1.25rem 1.5rem;
    }

    .about-cta {
        padding: 3rem 0;
    }
}

@media (max-width: 480px) {
    .about-hero {
        padding: 5rem 1rem 2.5rem;
        min-height: 50vh;
    }

    .about-hero-title span {
        font-size: 1.8rem;
        letter-spacing: 2px;
    }

    .about-hero-accent {
        font-size: 1.3rem !important;
    }

    .about-section {
        padding: 3rem 0;
    }

    .about-container {
        padding: 0 1rem;
    }

    .about-heading {
        font-size: 1.3rem;
        margin-bottom: 1.5rem;
    }

    .loop-slider {
        padding: 0 1rem;
    }

    .loop-step-slide {
        padding: 1.5rem 0;
    }

    .loop-step-slide:last-child {
        padding-bottom: 3rem;
    }

    .timeline-year::after {
        display: none;
    }

    .timeline-line {
        display: none;
    }

    .timeline-item {
        flex-direction: column;
        gap: 0.5rem;
    }

    .timeline-year {
        text-align: left;
    }

    .timeline-content {
        padding: 1rem;
    }

    .diff-card {
        padding: 1.25rem;
    }
}

@media (max-width: 375px) {
    .about-hero-title span {
        font-size: 1.5rem;
    }

    .about-hero-accent {
        font-size: 1.1rem !important;
    }

    .origin-lead {
        font-size: 1rem;
    }
}