/* =================================================================
   namu.farm — CSS Architecture
   Hand-drawn Agricultural Almanac in Frosted Glass
   Compliance note: Shake Micro Interactio Interaction Interaction* Interaction** — When a user attempts to
   interact with a non-interactive element (or hovers over a "coming soon"
   indicator, Intersection Observer with `threshold: 0.2` and
   `rootMargin: '-10%'`. Each path segment staggers by 200ms from the
   previous one. Ease: `cubic-bezier(0.25
   ================================================================= */

:root {
    /* Color Palette */
    --color-bg: #FFF8F0;
    --color-text-primary: #3D2E1C;
    --color-text-secondary: #5E4E3C;
    --color-accent-sage: #A8B89A;
    --color-accent-blush: #E8C4B8;
    --color-accent-clay: #C9956B;
    --color-accent-sky: #B8C4D8;
    --color-stroke: #9B7E5E;
    --color-annotation: #9B7E5E;

    /* Glassmorphic Properties */
    --glass-blur: 16px;
    --glass-blur-hover: 20px;
    --glass-bg: rgba(255, 248, 240, 0.42);
    --glass-border: rgba(255, 255, 255, 0.35);
    --glass-border-hover: rgba(255, 255, 255, 0.55);
    --glass-shadow: 0 8px 32px rgba(94, 78, 60, 0.08);

    /* Blob Fills */
    --blob-sage: rgba(168, 184, 154, 0.18);
    --blob-blush: rgba(232, 196, 184, 0.15);
    --blob-sky: rgba(184, 196, 216, 0.12);

    /* Timing */
    --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-glass: 800ms;
}

/* =================================================================
   Global Reset & Typography
   ================================================================= */

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text-secondary);
    font-family: "Nunito Sans", sans-serif;
    font-size: clamp(0.95rem, 1.8vw, 1.15rem);
    font-weight: 400;
    line-height: 1.7;
    letter-spacing: 0;
    overflow-x: hidden;
}

/* Reduce Motion Support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* =================================================================
   Typography Scale
   ================================================================= */

h1, h2, h3 {
    font-family: "Righteous", sans-serif;
    font-weight: 400;
    color: var(--color-text-primary);
    letter-spacing: 0.02em;
    line-height: 1.1;
}

h1 {
    font-size: clamp(2rem, 5.5vw, 4.5rem);
}

h2 {
    font-size: clamp(1.1rem, 2.4vw, 1.5rem);
}

h3 {
    font-size: clamp(1rem, 2vw, 1.3rem);
}

/* Card Annotations in Caveat Handwriting */
.card-annotation {
    font-family: "Caveat", cursive;
    font-size: clamp(0.85rem, 1.6vw, 1.05rem);
    font-weight: 500;
    color: var(--color-annotation);
    margin-top: 1.5rem;
    font-style: italic;
}

/* =================================================================
   Glassmorphic Card System
   ================================================================= */

.glass-card {
    backdrop-filter: blur(0) saturate(1);
    background: rgba(255, 248, 240, 0);
    border: 1px solid rgba(255, 255, 255, 0);
    border-radius: 20px;
    padding: clamp(1.5rem, 4vw, 2.5rem);
    box-shadow: var(--glass-shadow);
    position: absolute;
    opacity: 0;
    transform: translateY(24px);
    transition: all var(--transition-glass) var(--ease-out);
}

.glass-card.visible {
    opacity: 1;
    background: var(--glass-bg);
    border-color: var(--glass-border);
    transform: translateY(0);
    backdrop-filter: blur(var(--glass-blur)) saturate(1.4);
}

/* Desktop Hover Effect */
@media (hover: hover) {
    .glass-card:hover {
        backdrop-filter: blur(var(--glass-blur-hover)) saturate(1.6);
        border-color: var(--glass-border-hover);
        transform: translateY(-2px);
        box-shadow: 0 12px 40px rgba(94, 78, 60, 0.12);
    }
}

/* Card Sizes */
.glass-card--sm {
    width: clamp(260px, 100%, 300px);
}

.glass-card--md {
    width: clamp(380px, 100%, 450px);
}

.glass-card--lg {
    width: clamp(600px, 100%, 720px);
}

.glass-card--root {
    width: clamp(640px, 72vw, 800px);
}

/* Canopy Zone Card */
.glass-card--canopy {
    left: 38%;
    top: 50%;
    transform: translate(-50%, -50%) translateY(24px);
}

.glass-card--canopy.visible {
    transform: translate(-50%, -50%) translateY(0);
}

/* Trunk Zone Cards */
.glass-card--offset-left {
    left: 15%;
    top: 30%;
}

.glass-card--offset-right {
    right: 12%;
    top: 55%;
}

/* Branch Zone Cards */
.glass-card--branch-1 {
    left: 5%;
    top: 20%;
}

.glass-card--branch-2 {
    left: 50%;
    top: 40%;
    transform: translateX(-50%) translateY(24px) rotate(2deg);
}

.glass-card--branch-2.visible {
    transform: translateX(-50%) translateY(0) rotate(2deg);
}

.glass-card--branch-3 {
    right: 8%;
    top: 15%;
    transform: rotate(-1.5deg) translateY(24px);
}

.glass-card--branch-3.visible {
    transform: rotate(-1.5deg) translateY(0);
}

/* Root Zone Card */
.glass-card--root {
    left: 50%;
    top: 50%;
    transform: translateX(-50%) translateY(24px);
}

.glass-card--root.visible {
    transform: translateX(-50%) translateY(0);
}

/* Seed Zone Card */
.glass-card--seed {
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) translateY(24px);
}

.glass-card--seed.visible {
    transform: translate(-50%, -50%) translateY(0);
}

/* =================================================================
   Typography within Cards
   ================================================================= */

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    text-align: center;
    margin-bottom: 1rem;
}

.hero-korean {
    font-family: "Caveat", cursive;
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    color: var(--color-annotation);
    text-align: center;
    margin-bottom: 0.35rem;
    transform: rotate(-3deg);
}

.hero-subtitle {
    text-align: center;
    font-size: clamp(1rem, 2vw, 1.3rem);
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.card-heading {
    margin-bottom: 1rem;
}

.card-heading--sm {
    font-size: clamp(1rem, 1.8vw, 1.2rem);
}

.card-heading--seed {
    font-size: clamp(1.2rem, 2vw, 1.4rem);
}

.card-annotation--lg {
    margin-top: 2rem;
}

.card-annotation--seed {
    margin-top: 1.5rem;
}

/* =================================================================
   Section Layout & Zones
   ================================================================= */

.zone {
    position: relative;
    min-height: 120vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

.zone__content {
    position: relative;
    z-index: 10;
    width: 100%;
    height: 100%;
    max-width: 1400px;
    margin: 0 auto;
}

/* Canopy Zone */
.zone--canopy {
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg) 100%);
}

/* Trunk Zone */
.zone--trunk {
    background: var(--color-bg);
    position: relative;
}

/* Branch Zone */
.zone--branch {
    background: var(--color-bg);
}

/* Root Zone */
.zone--root {
    background: var(--color-bg);
}

/* Seed Zone */
.zone--seed {
    background: var(--color-bg);
    min-height: 100vh;
}

/* =================================================================
   Organic Blob Animations
   ================================================================= */

.blob {
    position: absolute;
    opacity: 0.8;
}

.blob--1 {
    width: 400px;
    height: 400px;
    top: 10%;
    left: -5%;
    animation: drift-1 25s ease-in-out infinite;
}

.blob--2 {
    width: 450px;
    height: 450px;
    top: 40%;
    right: 5%;
    animation: drift-2 32s ease-in-out infinite;
}

.blob--3 {
    width: 380px;
    height: 380px;
    top: 20%;
    right: -10%;
    animation: drift-3 38s ease-in-out infinite;
}

.blob--4 {
    width: 300px;
    height: 300px;
    bottom: 0%;
    left: 50%;
    transform: translateX(-50%);
    animation: drift-4 28s ease-in-out infinite;
}

@keyframes drift-1 {
    0% {
        transform: translate(0, 0);
    }
    25% {
        transform: translate(20px, -30px);
    }
    50% {
        transform: translate(-10px, 20px);
    }
    75% {
        transform: translate(15px, 10px);
    }
    100% {
        transform: translate(0, 0);
    }
}

@keyframes drift-2 {
    0% {
        transform: translate(0, 0);
    }
    25% {
        transform: translate(-25px, 15px);
    }
    50% {
        transform: translate(10px, -20px);
    }
    75% {
        transform: translate(-15px, -10px);
    }
    100% {
        transform: translate(0, 0);
    }
}

@keyframes drift-3 {
    0% {
        transform: translate(0, 0);
    }
    25% {
        transform: translate(15px, 25px);
    }
    50% {
        transform: translate(-20px, -15px);
    }
    75% {
        transform: translate(25px, 5px);
    }
    100% {
        transform: translate(0, 0);
    }
}

@keyframes drift-4 {
    0% {
        transform: translateX(-50%) translateY(0);
    }
    25% {
        transform: translateX(-50%) translateY(-15px);
    }
    50% {
        transform: translateX(-50%) translateY(10px);
    }
    75% {
        transform: translateX(-50%) translateY(-8px);
    }
    100% {
        transform: translateX(-50%) translateY(0);
    }
}

/* =================================================================
   SVG Diagram & Connector Animations
   ================================================================= */

.diagram,
.connector-line {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

/* SVG path drawing animation */
svg path {
    stroke-dasharray: var(--path-length, 1000);
    stroke-dashoffset: var(--path-length, 1000);
}

svg path.draw {
    animation: draw-path 1.5s var(--ease-out) forwards;
}

.shake-hint {
    display: inline-block;
    cursor: default;
}

.shake-hint.shake,
.shake-hint:hover {
    animation: shake 400ms ease-in-out;
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-3px) rotate(-0.5deg);
    }
    75% {
        transform: translateX(3px) rotate(0.5deg);
    }
}

@keyframes draw-path {
    to {
        stroke-dashoffset: 0;
    }
}

/* Scroll Indicator */
.scroll-indicator {
    text-align: center;
    font-size: 2rem;
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s ease-in-out infinite;
    color: var(--color-stroke);
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
        opacity: 0.7;
    }
    50% {
        transform: translateX(-50%) translateY(-10px);
        opacity: 1;
    }
}

/* =================================================================
   Mobile Responsive (below 640px)
   ================================================================= */

@media (max-width: 640px) {
    .zone {
        min-height: auto;
        padding: 2rem 0;
    }

    .zone__content {
        display: flex;
        flex-direction: column;
        position: relative;
        padding: 0 1rem;
    }

    .glass-card {
        position: relative;
        width: 100% !important;
        margin: 1.5rem 0;
        left: auto !important;
        right: auto !important;
        top: auto !important;
        transform: translateY(0) !important;
        opacity: 1;
        background: var(--glass-bg);
        border-color: var(--glass-border);
    }

    .glass-card:nth-child(odd) {
        margin-right: 2rem;
    }

    .glass-card:nth-child(even) {
        margin-left: 2rem;
    }

    .glass-card--canopy {
        position: relative;
        transform: none !important;
        margin-bottom: 3rem;
    }

    .glass-card--offset-left,
    .glass-card--offset-right {
        left: auto;
        right: auto;
        top: auto;
    }

    .glass-card--offset-left {
        margin-right: auto;
    }

    .glass-card--offset-right {
        margin-left: auto;
    }

    .glass-card--branch-1,
    .glass-card--branch-2,
    .glass-card--branch-3 {
        left: auto;
        right: auto;
        top: auto;
    }

    .glass-card--branch-2 {
        transform: none !important;
    }

    .glass-card--branch-3 {
        transform: none !important;
    }

    .glass-card--root {
        left: auto;
        right: auto;
        top: auto;
        transform: translateX(0) !important;
    }

    .glass-card--seed {
        position: relative;
        left: auto;
        right: auto;
        top: auto;
        transform: none !important;
        margin: 2rem auto;
    }

    /* Blob sizing for mobile */
    .blob {
        opacity: 0.5;
    }

    .blob--1 {
        width: 300px;
        height: 300px;
    }

    .blob--2 {
        width: 250px;
        height: 250px;
    }

    .blob--3 {
        width: 280px;
        height: 280px;
    }

    .blob--4 {
        width: 200px;
        height: 200px;
    }

    /* Scroll indicator visibility */
    .scroll-indicator {
        font-size: 1.5rem;
        bottom: 1rem;
    }

    /* Typography scaling for mobile */
    h1 {
        font-size: clamp(1.5rem, 5vw, 2.5rem);
    }

    h2 {
        font-size: clamp(1rem, 2.2vw, 1.3rem);
    }

    body {
        font-size: clamp(0.9rem, 1.6vw, 1rem);
    }
}

/* =================================================================
   Reduced Motion
   ================================================================= */

@media (prefers-reduced-motion: reduce) {
    .blob {
        animation: none;
    }

    .scroll-indicator {
        animation: none;
    }

    svg path {
        stroke-dashoffset: 0;
    }

    .glass-card {
        transform: translateY(0) !important;
        transition: none;
        background: var(--glass-bg);
        border-color: var(--glass-border);
    }

    .shake-hint,
    .shake-hint:hover,
    .shake-hint.shake {
        animation: none;
    }

    @keyframes drift-1 {
        to { transform: translate(0, 0); }
    }

    @keyframes drift-2 {
        to { transform: translate(0, 0); }
    }

    @keyframes drift-3 {
        to { transform: translate(0, 0); }
    }

    @keyframes drift-4 {
        to { transform: translateX(-50%) translateY(0); }
    }

    @keyframes bounce {
        to { transform: translateX(-50%) translateY(0); opacity: 0.7; }
    }
}