/* PLUSEX GLOBAL DESIGN SYSTEM */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@100;300;400;500;600;700;900&display=swap');

:root {
    /* Colors */
    --canvas: #FFFFFF;
    --page-bg: #F9F9F9;
    --white: #FFFFFF;
    --black: #0D0D0D;
    --gold: #C5A02E;
    /* Sovereign Gold */
    --muted: #A3A3A3;
    --accent: #F9F8F6;
    --green: #22C55E;
    --red: #EF4444;
    --glass: rgba(255, 255, 255, 0.9);
    --border: rgba(0, 0, 0, 0.05);

    /* Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;

    /* Shadows */
    --shadow-sm: 0 10px 30px -15px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 50px -20px rgba(0, 0, 0, 0.12);

    /* Spacing */
    --side-padding: 1.25rem;
    --section-gap: 1.5rem;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--page-bg);
    color: var(--black);
    font-family: 'Outfit', sans-serif;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Core Layout Component */
.web-ui-frame {
    width: 375px;
    margin: 0 auto;
    background-color: var(--canvas);
    position: relative;
    height: 812px;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.mobile-container {
    padding: 0 var(--side-padding);
}

/* Scrollbar Hiding */
.no-scrollbar::-webkit-scrollbar {
    display: none;
}

.no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* Texture Overlay */
.grain {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.04;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Header Patterns */
.header-glass {
    position: sticky;
    top: 0;
    z-index: 100;
    width: 100%;
    background: var(--glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

/* Typography Unified */
.title-primary {
    font-size: 1.25rem;
    font-weight: 900;
    letter-spacing: -0.02em;
}

.title-primary::after {
    content: ".";
}

.label-caps {
    font-size: 0.5625rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
}

.text-price {
    font-size: 1.125rem;
    font-weight: 900;
    letter-spacing: -0.05em;
}

/* Card Patterns */
.card-base {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card-base:active {
    transform: scale(0.98);
}

/* Navigation Patterns */
.nav-bar {
    position: sticky;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
}

.nav-content {
    display: flex;
    justify-content: space-around;
    padding: 0.75rem 1rem calc(1.75rem + env(safe-area-inset-bottom));
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    color: var(--muted);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    min-width: 4.5rem;
}

.nav-icon-wrapper {
    width: 1.5rem;
    height: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-icon-wrapper img {
    width: 1.25rem;
    height: 1.25rem;
    filter: grayscale(1) opacity(0.4);
    transition: all 0.3s ease;
}

.nav-item.active {
    color: var(--black);
}

.nav-item.active .nav-icon-wrapper img {
    filter: none;
    /* Shows gold if the icon itself is gold or use sepia/invert for gold */
    transform: translateY(-2px);
}

/* Specific Gold Filter for Active Icons */
.nav-item.active .nav-icon-wrapper img {
    filter: invert(56%) sepia(21%) saturate(1211%) hue-rotate(11deg) brightness(97%) contrast(88%);
}

.nav-dot {
    width: 4px;
    height: 4px;
    background: var(--gold);
    border-radius: 50%;
    opacity: 0;
    transform: scale(0);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.nav-item.active .nav-dot {
    opacity: 1;
    transform: scale(1);
    box-shadow: 0 0 10px rgba(197, 160, 46, 0.4);
}

.nav-label {
    font-size: 0.5rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    transition: all 0.3s ease;
}

.nav-item.active .nav-label {
    color: var(--black);
    letter-spacing: 0.12em;
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(15px);
    animation: reveal 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes reveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}