/* ==========================================================================
   bada.city - Evolved Minimal, Broken-Grid, Warm-Earthy
   ========================================================================== */

/* --- Custom Properties --- */
:root {
    /* Palette */
    --kiln-white: #F2EDE6;
    --deep-umber: #3B2316;
    --terracotta-blaze: #C4572A;
    --faded-terracotta: #B87A5E;
    --warm-sand: #D9C6A5;
    --oxidized-iron: #6B3D2E;
    --bleached-linen: #FAF6F0;
    --ember-glow: #E8913A;
    --shadow-lift: #2A1A10;

    /* Lens flare position (updated via JS) */
    --flare-x: 70%;
    --flare-y: 20%;

    /* Easing */
    --ease-confident: cubic-bezier(0.22, 1, 0.36, 1);

    /* Grid */
    --col-width: calc(100vw / 12);
    --gutter-cols: 2;
    --content-cols: 7;
    --margin-left: calc(var(--col-width) * var(--gutter-cols));
}

/* --- Reset / Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Source Serif 4', Georgia, serif;
    font-weight: 400;
    font-size: 1.125rem;
    line-height: 1.75;
    color: var(--deep-umber);
    background-color: var(--kiln-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Typography --- */
.approach-title,
.statement-text,
.interior-heading,
.skyline-title,
.foundation-domain,
.nav-overlay-link {
    font-family: 'Bebas Neue', Impact, sans-serif;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    line-height: 0.92;
}

.coord-label,
.margin-annotation span,
.foundation-label {
    font-family: 'Barlow Condensed', 'Arial Narrow', sans-serif;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--faded-terracotta);
}

/* --- Lens Flare Overlay --- */
.lens-flare {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 100;
    overflow: hidden;
}

.flare-bloom {
    position: absolute;
    width: 80vmax;
    height: 80vmax;
    top: calc(var(--flare-y) - 40vmax);
    left: calc(var(--flare-x) - 40vmax);
    background: radial-gradient(
        circle at center,
        rgba(232, 145, 58, 0.15) 0%,
        rgba(232, 145, 58, 0.08) 20%,
        rgba(232, 145, 58, 0.03) 40%,
        rgba(232, 145, 58, 0) 70%
    );
    border-radius: 50%;
    transition: top 0.8s var(--ease-confident), left 0.8s var(--ease-confident);
}

.flare-artifact {
    position: absolute;
    border-radius: 50%;
    transition: top 0.8s var(--ease-confident), left 0.8s var(--ease-confident);
}

.flare-artifact-1 {
    width: 15px;
    height: 15px;
    background: radial-gradient(circle, rgba(232, 145, 58, 0.30) 0%, transparent 70%);
    top: calc(var(--flare-y) + 10vh);
    left: calc(var(--flare-x) - 15vw);
}

.flare-artifact-2 {
    width: 12px;
    height: 12px;
    background: radial-gradient(circle, rgba(232, 145, 58, 0.20) 0%, transparent 70%);
    top: calc(var(--flare-y) + 20vh);
    left: calc(var(--flare-x) - 25vw);
}

.flare-artifact-3 {
    width: 10px;
    height: 10px;
    background: radial-gradient(circle, rgba(196, 87, 42, 0.10) 0%, transparent 70%);
    top: calc(var(--flare-y) + 30vh);
    left: calc(var(--flare-x) - 35vw);
}

.flare-artifact-4 {
    width: 8px;
    height: 8px;
    background: radial-gradient(circle, rgba(196, 87, 42, 0.05) 0%, transparent 70%);
    top: calc(var(--flare-y) + 38vh);
    left: calc(var(--flare-x) - 42vw);
}

/* --- Navigation Bar --- */
.nav-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2.5rem;
    z-index: 200;
    mix-blend-mode: normal;
}

.nav-domain {
    font-family: 'Bebas Neue', Impact, sans-serif;
    font-weight: 400;
    font-size: 1.2rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--deep-umber);
}

.nav-hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 210;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 1.5px;
    background-color: var(--deep-umber);
    transition: all 0.3s var(--ease-confident);
}

/* --- Navigation Overlay --- */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(59, 35, 22, 0.97);
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s var(--ease-confident), visibility 0.5s;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.nav-overlay-grain {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
    background-size: 256px 256px;
    pointer-events: none;
}

.nav-close {
    position: absolute;
    top: 1.5rem;
    right: 2.5rem;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 30px;
    padding: 0;
}

.close-line {
    position: absolute;
    display: block;
    width: 28px;
    height: 1.5px;
    background-color: var(--bleached-linen);
    top: 50%;
    left: 50%;
}

.close-line:first-child {
    transform: translate(-50%, -50%) rotate(45deg);
}

.close-line:last-child {
    transform: translate(-50%, -50%) rotate(-45deg);
}

.nav-overlay-links {
    display: flex;
    flex-direction: column;
    gap: 2vh;
    padding-left: var(--margin-left);
}

.nav-overlay-link {
    font-size: clamp(3rem, 12vw, 10rem);
    color: var(--bleached-linen);
    text-decoration: none;
    line-height: 1;
    transition: color 0.3s var(--ease-confident);
}

.nav-overlay-link:hover {
    color: var(--ember-glow);
}

/* --- Grid Points Background --- */
.grid-points-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='120' height='120' viewBox='0 0 120 120' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='60' cy='60' r='2' fill='none' stroke='%23B87A5E' stroke-width='0.75'/%3E%3C/svg%3E");
    background-size: calc(100vw / 12) calc(100vw / 12);
    transition: opacity 1s var(--ease-confident);
}

.grid-points-bg.grid-points-visible {
    opacity: 0.15;
}

.grid-points-bg.grid-points-dense {
    opacity: 0.25;
    background-size: calc(100vw / 24) calc(100vw / 24);
}

/* --- Margin Annotations --- */
.margin-annotation {
    position: absolute;
    top: 15vh;
    left: 1.5rem;
    width: calc(var(--col-width) * 2 - 2rem);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    z-index: 5;
}

.coord-label {
    font-size: 10px;
    opacity: 0.20;
    display: block;
}

/* --- Animated Rules --- */
.animated-rule {
    position: absolute;
    bottom: 5vh;
    left: 15%;
    width: 0;
    height: 1px;
    background: linear-gradient(135deg, var(--terracotta-blaze), var(--ember-glow));
    animation: rule-cycle 8s ease-in-out infinite alternate;
}

@keyframes rule-cycle {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.animated-rule.animate-in {
    width: 50%;
    transition: width 1.5s var(--ease-confident);
}

/* --- Connection Lines --- */
.connection-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.conn-line {
    stroke: var(--faded-terracotta);
    stroke-width: 0.5;
    opacity: 0.15;
}

/* --- Topographic Contours --- */
.topo-contour {
    position: absolute;
    pointer-events: none;
    z-index: 1;
    opacity: 0.08;
}

.topo-contour-1 {
    top: 10%;
    left: 20%;
    width: 60%;
    height: 30%;
}

.topo-contour-2 {
    bottom: 5%;
    left: 10%;
    width: 50%;
    height: 25%;
}

.topo-path {
    stroke-dasharray: 1200;
    stroke-dashoffset: 1200;
    transition: stroke-dashoffset 3s var(--ease-confident);
}

.topo-contour.animate-in .topo-path {
    stroke-dashoffset: 0;
}

/* --- Border Animate Box --- */
.border-animate-box {
    position: relative;
    padding: 2rem 2.5rem;
}

.border-animate-box::before,
.border-animate-box::after,
.border-animate-box .border-top,
.border-animate-box .border-bottom {
    content: '';
    position: absolute;
    background-color: var(--terracotta-blaze);
    transform-origin: left;
}

/* Top border */
.border-animate-box::before {
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease-confident);
}

/* Right border */
.border-animate-box::after {
    top: 0;
    right: 0;
    width: 1px;
    height: 100%;
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.4s var(--ease-confident) 0.3s;
}

.border-animate-box .border-seg-bottom,
.border-animate-box .border-seg-left {
    position: absolute;
    background-color: var(--terracotta-blaze);
}

/* We'll use JS-injected spans for bottom and left borders */

.border-animate-box.animated::before {
    transform: scaleX(1);
}

.border-animate-box.animated::after {
    transform: scaleY(1);
}

.border-animate-box.animated .border-seg-bottom {
    transform: scaleX(1);
}

.border-animate-box.animated .border-seg-left {
    transform: scaleY(1);
}

/* =============================================
   SECTION: The Approach
   ============================================= */
.section-approach {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding-bottom: 12vh;
    background-color: var(--kiln-white);
    overflow: hidden;
}

.approach-content {
    position: relative;
    z-index: 5;
    padding-left: var(--margin-left);
    padding-right: 2rem;
    max-width: calc(var(--col-width) * 9);
}

.approach-title {
    font-size: clamp(4rem, 15vw, 15rem);
    color: var(--deep-umber);
    margin-bottom: 1.5rem;
}

.approach-manifesto {
    font-family: 'Source Serif 4', Georgia, serif;
    font-style: italic;
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    line-height: 1.75;
    color: var(--oxidized-iron);
    max-width: 38em;
}

.approach-border-line {
    position: absolute;
    bottom: 33vh;
    left: var(--margin-left);
    height: 1px;
    width: 0;
    background: linear-gradient(135deg, var(--terracotta-blaze), var(--ember-glow));
    background-size: 200% 200%;
    animation: gradient-shift 8s ease-in-out infinite alternate;
}

.approach-border-line.animate-in {
    width: 60%;
    transition: width 3s var(--ease-confident);
}

@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

/* =============================================
   SECTION: The Threshold
   ============================================= */
.section-threshold {
    position: relative;
    min-height: 100vh;
    padding: 15vh 0;
    background-color: var(--warm-sand);
    overflow: hidden;
}

.diagonal-transition-top {
    position: absolute;
    top: -5vw;
    left: -5%;
    width: 120%;
    height: 10vw;
    background-color: var(--kiln-white);
    transform: rotate(-3deg);
    transform-origin: top left;
    z-index: 2;
}

.diagonal-transition-top.reverse {
    background-color: var(--warm-sand);
    transform: rotate(3deg);
    transform-origin: top right;
}

.threshold-content {
    position: relative;
    z-index: 5;
    padding-left: var(--margin-left);
    padding-right: 2rem;
    max-width: calc(var(--col-width) * 9);
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.threshold-statement {
    padding: 2rem 2.5rem;
}

.statement-text {
    font-size: clamp(2rem, 4vw, 4rem);
    color: var(--deep-umber);
}

.rule-threshold {
    left: 25%;
}

/* =============================================
   SECTION: The Interior
   ============================================= */
.section-interior {
    position: relative;
    min-height: 200vh;
    padding: 20vh 0 15vh;
    background-color: var(--kiln-white);
    overflow: hidden;
}

.interior-content {
    position: relative;
    z-index: 5;
}

.interior-block {
    margin-bottom: 8vh;
    padding: 2.5rem 3rem;
}

.interior-block-1 {
    margin-left: var(--margin-left);
    max-width: calc(var(--col-width) * 7);
}

.interior-block-2 {
    margin-left: calc(var(--col-width) * 4);
    max-width: calc(var(--col-width) * 6);
}

.interior-block-3 {
    margin-left: var(--margin-left);
    max-width: calc(var(--col-width) * 7);
}

.interior-block-4 {
    margin-left: calc(var(--col-width) * 3);
    max-width: calc(var(--col-width) * 7);
}

.interior-heading {
    font-size: clamp(2rem, 4vw, 3.5rem);
    color: var(--deep-umber);
    margin-bottom: 1.5rem;
}

.interior-body {
    font-family: 'Source Serif 4', Georgia, serif;
    font-weight: 400;
    font-size: 1.125rem;
    line-height: 1.75;
    color: var(--deep-umber);
    max-width: 38em;
    margin-bottom: 1rem;
}

.interior-body:last-child {
    margin-bottom: 0;
}

.interior-coord {
    display: inline-block;
    margin-bottom: 1rem;
    font-size: 10px;
    opacity: 0.3;
}

/* Photo break - breaks the grid rightward */
.interior-photo-break {
    position: relative;
    margin-left: calc(var(--col-width) * 3);
    margin-right: -10vw;
    margin-bottom: 8vh;
    z-index: 4;
}

.photo-placeholder {
    position: relative;
    width: 100%;
    height: 50vh;
    background-color: var(--warm-sand);
    overflow: hidden;
}

.photo-grain {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
    background-size: 256px 256px;
}

.photo-warm-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(232, 145, 58, 0.08) 0%, rgba(196, 87, 42, 0.05) 100%);
}

.photo-abstract {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.rule-interior {
    left: 10%;
}

/* =============================================
   SECTION: The Skyline
   ============================================= */
.section-skyline {
    position: relative;
    min-height: 100vh;
    padding: 20vh 0 15vh;
    background-color: var(--kiln-white);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.skyline-coords {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.skyline-coord {
    position: absolute;
    font-size: 10px;
    opacity: 0.15;
}

.connection-lines-dense .conn-line {
    opacity: 0.20;
}

.skyline-content {
    position: relative;
    z-index: 5;
    padding-left: var(--margin-left);
    padding-right: 2rem;
    max-width: calc(var(--col-width) * 9);
}

.skyline-statement {
    margin-bottom: 3rem;
    padding: 2rem 2.5rem;
}

.skyline-title {
    font-size: clamp(3rem, 8vw, 9rem);
    color: var(--deep-umber);
}

.skyline-body {
    font-family: 'Source Serif 4', Georgia, serif;
    font-weight: 400;
    font-size: 1.25rem;
    line-height: 1.75;
    color: var(--deep-umber);
    max-width: 38em;
    margin-top: 3rem;
    padding-left: var(--margin-left);
}

/* =============================================
   SECTION: The Foundation (Footer)
   ============================================= */
.section-foundation {
    position: relative;
    padding: 8vh 0;
    background-color: var(--oxidized-iron);
    overflow: hidden;
}

.foundation-border-line {
    position: absolute;
    top: 0;
    left: 20%;
    width: 0;
    height: 1px;
    background-color: var(--ember-glow);
}

.foundation-border-line.animate-in {
    width: 60%;
    transition: width 1.5s var(--ease-confident);
}

.foundation-content {
    padding-left: var(--margin-left);
    padding-right: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 2rem;
}

.foundation-domain {
    font-size: clamp(2rem, 5vw, 4rem);
    color: var(--bleached-linen);
}

.foundation-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: flex-end;
}

.foundation-label {
    font-size: 10px;
    opacity: 0.5;
    color: var(--bleached-linen);
}

/* =============================================
   SECTIONS: Common
   ============================================= */
.section {
    position: relative;
}

/* =============================================
   ANIMATED BORDERS (4-side clockwise draw)
   ============================================= */
.border-seg-bottom {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 1px;
    background-color: var(--terracotta-blaze);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s var(--ease-confident) 0.6s;
}

.border-seg-left {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 1px;
    height: 100%;
    background-color: var(--terracotta-blaze);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.4s var(--ease-confident) 0.9s;
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 768px) {
    :root {
        --margin-left: 1.5rem;
    }

    .approach-content,
    .threshold-content,
    .interior-block,
    .skyline-content,
    .foundation-content {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
        max-width: 100%;
    }

    .interior-block-1,
    .interior-block-2,
    .interior-block-3,
    .interior-block-4 {
        margin-left: 1.5rem;
        max-width: calc(100% - 3rem);
    }

    .interior-photo-break {
        margin-left: 1rem;
        margin-right: -5vw;
    }

    .margin-annotation {
        display: none;
    }

    .nav-overlay-links {
        padding-left: 1.5rem;
    }

    .nav-overlay-link {
        font-size: clamp(2rem, 10vw, 5rem);
    }

    .skyline-body {
        padding-left: 1.5rem;
    }

    .foundation-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .foundation-meta {
        align-items: flex-start;
    }
}