/* ============================================
   AddrProxy.com - Styles
   Angular precision. Warm materiality.
   ============================================ */

/* --- Custom Properties --- */
:root {
    --parchment: #F5F0E8;
    --warm-linen: #EDE4D6;
    --deep-espresso: #2C1810;
    --warm-umber: #5C4033;
    --terracotta: #C4724E;
    --sandy-bronze: #9B7B5E;
    --charred-walnut: #3B2820;
    --pale-sienna: #D4A574;

    --margin: clamp(3rem, 8vw, 8rem);
    --nav-height: 64px;
    --nav-height-compact: 48px;
}

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

html {
    scroll-snap-type: y proximity;
    scroll-behavior: smooth;
}

body {
    font-family: 'Work Sans', sans-serif;
    font-weight: 400;
    font-size: 1.05rem;
    line-height: 1.7;
    letter-spacing: 0.01em;
    color: var(--warm-umber);
    background-color: var(--parchment);
    overflow-x: hidden;
    border-radius: 0;
}

/* Zero border-radius everywhere */
* {
    border-radius: 0 !important;
}

/* --- Routing Path (persistent decorative line) --- */
#routing-path {
    position: fixed;
    left: calc(var(--margin) - 1.5rem);
    top: 0;
    width: 60px;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
    opacity: 0;
    transition: opacity 800ms ease;
}

#routing-path.visible {
    opacity: 0.3;
}

#routing-line {
    stroke-dasharray: 3200;
    stroke-dashoffset: 3200;
    transition: stroke-dashoffset 1200ms ease-in-out;
}

#routing-line.drawn {
    stroke-dashoffset: 0;
}

/* --- Navigation --- */
#main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 100;
    background-color: var(--parchment);
    transition: height 300ms ease, border-bottom-color 400ms ease;
    border-bottom: 1px solid transparent;
}

#main-nav.scrolled {
    height: var(--nav-height-compact);
    border-bottom: 1px solid var(--terracotta);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--margin);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--deep-espresso);
}

.logo-mark {
    transition: transform 350ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.logo:hover .logo-mark {
    transform: rotate(15deg);
}

.logo-text {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 600;
    font-size: 1.2rem;
    letter-spacing: -0.03em;
    color: var(--deep-espresso);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--sandy-bronze);
    text-decoration: none;
    position: relative;
    padding-bottom: 2px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--terracotta);
    transition: width 250ms ease-out;
}

.nav-link:hover::after {
    width: 100%;
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--deep-espresso);
    transition: transform 300ms ease, opacity 200ms ease;
}

.hamburger.open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
    opacity: 0;
}

.hamburger.open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* --- Sections --- */
.section {
    min-height: 100vh;
    scroll-snap-align: start;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
}

.section--light {
    background-color: var(--parchment);
}

.section--alt {
    background-color: var(--warm-linen);
}

.section--dark {
    background-color: var(--charred-walnut);
}

.section--dark h2 {
    color: var(--parchment);
}

.section--dark .sub-headline {
    color: var(--pale-sienna);
}

.section--dark .body-text {
    color: var(--warm-linen);
    opacity: 0.85;
}

/* --- Section Content Layout (F-pattern) --- */
.section-content {
    display: grid;
    grid-template-columns: [margin] var(--margin) [content-start] 1fr 1fr 1fr 1fr 1fr 1fr [content-end] var(--margin) [margin-end];
    align-items: center;
    width: 100%;
    min-height: 100vh;
    padding-top: var(--nav-height);
}

.section-content--centered {
    justify-items: center;
}

.content-left {
    grid-column: content-start / span 3;
    padding-right: 2rem;
}

.content-right {
    grid-column: span 3 / content-end;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* --- Typography --- */
h1 {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 600;
    font-size: clamp(2.8rem, 6vw, 5rem);
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--deep-espresso);
    margin-bottom: 1.5rem;
}

h2 {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 500;
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    letter-spacing: -0.03em;
    line-height: 1.2;
    color: var(--deep-espresso);
    margin-bottom: 1rem;
}

h3 {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 500;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
    color: var(--deep-espresso);
    margin-bottom: 0.3rem;
}

.subtitle {
    font-family: 'Work Sans', sans-serif;
    font-weight: 400;
    font-size: 1.15rem;
    line-height: 1.7;
    color: var(--warm-umber);
    max-width: 480px;
    margin-bottom: 2.5rem;
}

.sub-headline {
    font-family: 'Work Sans', sans-serif;
    font-weight: 500;
    font-size: 1.1rem;
    color: var(--sandy-bronze);
    margin-bottom: 1.5rem;
    max-width: 60%;
}

.body-text {
    font-family: 'Work Sans', sans-serif;
    font-weight: 400;
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--warm-umber);
    max-width: 520px;
    margin-bottom: 2rem;
}

/* --- Directional Indicator --- */
.directional-indicator {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.arrow-mark {
    display: inline-block;
    width: 16px;
    height: 16px;
    position: relative;
    flex-shrink: 0;
}

.arrow-mark::before,
.arrow-mark::after {
    content: '';
    position: absolute;
    background-color: var(--terracotta);
}

.arrow-mark::before {
    width: 10px;
    height: 1.5px;
    top: 50%;
    left: 0;
    transform: translateY(-50%) rotate(45deg);
    transform-origin: right center;
}

.arrow-mark::after {
    width: 10px;
    height: 1.5px;
    top: 50%;
    left: 0;
    transform: translateY(-50%) rotate(-45deg);
    transform-origin: right center;
}

.indicator-text {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--sandy-bronze);
}

/* --- Routing Diagrams --- */
.routing-diagram {
    width: 100%;
    max-width: 400px;
    height: auto;
    transition: transform 350ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.routing-diagram:hover {
    transform: scale(1.03);
}

.route-line {
    stroke-dasharray: 500;
    stroke-dashoffset: 500;
    transition: stroke-dashoffset 800ms ease;
}

.section.in-view .route-line {
    stroke-dashoffset: 0;
}

.node {
    opacity: 0;
    transition: opacity 300ms ease, transform 300ms ease;
}

.section.in-view .node {
    opacity: 1;
}

/* Node pulse animation */
@keyframes nodePulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* --- Chevron Dividers --- */
.chevron-divider {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0.6;
    animation: chevronBob 2s ease-in-out infinite;
    z-index: 2;
}

.chevron-divider--dark svg line {
    stroke: var(--pale-sienna);
}

@keyframes chevronBob {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* --- Diagonal Section Dividers --- */
.diagonal-top {
    position: absolute;
    top: -1px;
    left: 0;
    right: 0;
    height: 80px;
    background-color: var(--parchment);
    clip-path: polygon(0 0, 100% 0, 100% 0%, 0 100%);
    z-index: 2;
}

.section--alt .diagonal-top {
    background-color: var(--parchment);
}

.section--light .diagonal-top {
    background-color: var(--warm-linen);
}

.section--dark .diagonal-top,
.diagonal-top--dark {
    background-color: var(--parchment);
}

/* Animated diagonal fold */
.diagonal-top {
    clip-path: polygon(0 0, 100% 0, 100% 0%, 0 0%);
    transition: clip-path 600ms ease;
}

.section.in-view .diagonal-top {
    clip-path: polygon(0 0, 100% 0, 100% 0%, 0 100%);
}

/* Fix: first section after hero uses light bg for diagonal */
#how-it-works .diagonal-top {
    background-color: var(--parchment);
}

#the-route .diagonal-top {
    background-color: var(--warm-linen);
}

#trust .diagonal-top {
    background-color: var(--parchment);
}

#envelope .diagonal-top {
    background-color: var(--charred-walnut);
}

#begin .diagonal-top {
    background-color: var(--warm-linen);
}

/* --- Route Steps --- */
.route-steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 1.5rem;
}

.route-step {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.step-number {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 600;
    font-size: 1.8rem;
    color: var(--terracotta);
    opacity: 0.4;
    line-height: 1;
    flex-shrink: 0;
    min-width: 2.5rem;
}

.step-content h3 {
    color: var(--deep-espresso);
}

.step-content p {
    font-size: 0.95rem;
    color: var(--warm-umber);
    line-height: 1.6;
    max-width: 400px;
}

/* --- Trust Pillars --- */
.trust-pillars {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.pillar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.pillar-text {
    font-family: 'Work Sans', sans-serif;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--warm-linen);
}

/* --- Envelope Visual --- */
.envelope-visual {
    grid-column: content-start / content-end;
    display: flex;
    justify-content: center;
    padding: 2rem 0;
}

.envelope-svg {
    width: 100%;
    max-width: 500px;
    height: auto;
}

.envelope-body,
.envelope-flap {
    stroke-dasharray: 2000;
    stroke-dashoffset: 2000;
    transition: stroke-dashoffset 1000ms ease;
}

.section.in-view .envelope-body,
.section.in-view .envelope-flap {
    stroke-dashoffset: 0;
}

.envelope-caption {
    grid-column: content-start / content-end;
    text-align: center;
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: 1.2rem;
    letter-spacing: 0.08em;
    color: var(--sandy-bronze);
    margin-top: 1.5rem;
}

/* --- CTA Link --- */
.cta-link {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--terracotta);
    text-decoration: none;
    padding: 1rem 0;
    border-bottom: 2px solid var(--terracotta);
    transition: color 250ms ease;
}

.cta-link:hover {
    color: var(--deep-espresso);
}

/* --- Footer --- */
.footer {
    background-color: var(--charred-walnut);
    padding: 3rem var(--margin);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-brand {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 500;
    font-size: 1rem;
    color: var(--pale-sienna);
    letter-spacing: -0.02em;
}

.footer-text {
    font-family: 'Josefin Sans', sans-serif;
    font-weight: 300;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--sandy-bronze);
}

/* --- Watermarks --- */
.watermark {
    position: fixed;
    pointer-events: none;
    z-index: 0;
    opacity: 0.05;
}

.watermark--1 {
    top: 20%;
    right: 5%;
    transform: rotate(15deg);
}

.watermark--2 {
    top: 60%;
    left: 3%;
    transform: rotate(15deg);
}

/* --- Reveal Animations --- */
.reveal-item {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 500ms ease, transform 500ms ease;
}

.reveal-item.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Staggered delays */
.section.in-view .reveal-item:nth-child(1) { transition-delay: 0ms; }
.section.in-view .reveal-item:nth-child(2) { transition-delay: 150ms; }
.section.in-view .reveal-item:nth-child(3) { transition-delay: 300ms; }
.section.in-view .reveal-item:nth-child(4) { transition-delay: 450ms; }

/* Route steps stagger */
.route-steps .reveal-item:nth-child(1) { transition-delay: 300ms; }
.route-steps .reveal-item:nth-child(2) { transition-delay: 450ms; }
.route-steps .reveal-item:nth-child(3) { transition-delay: 600ms; }

/* Trust pillars stagger */
.trust-pillars .reveal-item:nth-child(1) { transition-delay: 400ms; }
.trust-pillars .reveal-item:nth-child(2) { transition-delay: 500ms; }
.trust-pillars .reveal-item:nth-child(3) { transition-delay: 600ms; }
.trust-pillars .reveal-item:nth-child(4) { transition-delay: 700ms; }

/* --- Nav border animation --- */
#main-nav::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--terracotta);
    transition: width 400ms ease;
}

#main-nav.scrolled::after {
    width: 100%;
}

/* Remove the earlier border-bottom approach in favor of pseudo-element */
#main-nav.scrolled {
    border-bottom: none;
}

/* --- Responsive: Mobile --- */
@media (max-width: 768px) {
    :root {
        --margin: 1.5rem;
    }

    .section-content {
        grid-template-columns: [margin] var(--margin) [content-start] 1fr [content-end] var(--margin) [margin-end];
        padding-top: calc(var(--nav-height) + 2rem);
        padding-bottom: 4rem;
    }

    .content-left {
        grid-column: content-start / content-end;
        padding-right: 0;
        margin-bottom: 2rem;
    }

    .content-right {
        grid-column: content-start / content-end;
    }

    .routing-diagram {
        max-width: 280px;
    }

    .hamburger {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--parchment);
        flex-direction: column;
        padding: 2rem var(--margin);
        gap: 1.5rem;
        border-bottom: 1px solid var(--terracotta);
    }

    .nav-links.open {
        display: flex;
    }

    .sub-headline {
        max-width: 100%;
    }

    .diagonal-top {
        height: 40px;
    }

    h1 {
        font-size: clamp(2rem, 8vw, 3rem);
    }

    .section {
        min-height: auto;
        min-height: 100vh;
        scroll-snap-align: start;
    }

    .footer-inner {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .envelope-svg {
        max-width: 300px;
    }
}

/* --- Selection styling --- */
::selection {
    background-color: var(--pale-sienna);
    color: var(--deep-espresso);
}

/* --- Scroll bar styling (webkit) --- */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--parchment);
}

::-webkit-scrollbar-thumb {
    background: var(--sandy-bronze);
}

/* --- Hero section specific --- */
#hero {
    padding-top: var(--nav-height);
}

#hero .section-content {
    padding-top: 0;
}