/* ==========================================================================
   NATAG NATURSTEIN AG · MASTER LUXURY STYLESHEET
   Benchmark Quality: Nalysana Standard · Alpine Mineral & Swiss Precision
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@200;300;400;500;600;700&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,600;1,400&display=swap');

:root {
    --color-nero: #17191C;
    --color-slate: #24282D;
    --color-bronze: #B89758;
    --color-bronze-light: #D4B87E;
    --color-chalk: #F8F7F4;
    --color-sand: #EFECE6;
    --color-fuge: #E4E1DB;
    --color-granit: #4A4E54;
    --color-alpinrot: #AE182B;
    --color-natagrot: #AE182B;
    --color-salbei: #526E5B;
    --font-heading: 'Cinzel', serif;
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'Cormorant Garamond', Georgia, serif;
}

/* Base Resets & Global Color Guard (Zero Royal Blue) */
:root {
    accent-color: var(--color-natagrot);
}

input, select, textarea, button {
    accent-color: var(--color-natagrot);
}

input[type="radio"], input[type="checkbox"] {
    accent-color: var(--color-natagrot);
}

html {
    scroll-behavior: smooth;
    text-size-adjust: 100%;
}

body {
    background-color: var(--color-chalk);
    color: var(--color-nero);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

::selection {
    background: rgba(174, 24, 43, 0.25);
    color: var(--color-nero);
}

.font-cinzel {
    font-family: var(--font-heading);
}

.font-serif-italic {
    font-family: var(--font-serif);
    font-style: italic;
}

/* Luxury Header & Glassmorphism - Monolithic Dark Glass */
.header-glass {
    background: rgba(23, 25, 28, 0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(174, 24, 43, 0.3);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.header-scrolled {
    background: rgba(23, 25, 28, 0.98);
    box-shadow: 0 12px 35px -10px rgba(0, 0, 0, 0.5);
    border-bottom: 1px solid var(--color-natagrot);
}

/* Navigation Links: No Wrap & Swiss Micro-Interaction */
.nav-item {
    position: relative;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    transition: color 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0%;
    height: 1.5px;
    background-color: var(--color-natagrot);
    transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-item:hover::after,
.nav-item.active::after {
    width: 100%;
}


/* Natag Red Glow & Action Accents */
.rot-glow {
    text-shadow: 0 0 20px rgba(174, 24, 43, 0.45);
}

.box-glow-rot {
    box-shadow: 0 0 30px rgba(174, 24, 43, 0.35), 0 8px 22px rgba(23, 25, 28, 0.2);
}

.btn-natag-primary {
    background-color: var(--color-natagrot);
    color: #FFFFFF;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-natag-primary:hover {
    background-color: #8C1221;
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(174, 24, 43, 0.5), 0 8px 20px rgba(0, 0, 0, 0.25);
    color: #FFFFFF;
}

/* Ambient Subtle Grain Canvas */
#ambient-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 0;
    opacity: 0.025;
}

/* Luxury Gold & Bronze Glows */
.bronze-glow {
    text-shadow: 0 0 25px rgba(184, 151, 88, 0.4);
}

.box-glow-bronze {
    box-shadow: 0 0 35px rgba(184, 151, 88, 0.25), 0 10px 25px rgba(23, 25, 28, 0.05);
}

/* Monolithic Stone Cards */
.stone-card {
    background: #FFFFFF;
    border: 1px solid var(--color-fuge);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
}

.stone-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-bronze);
    box-shadow: 0 20px 45px -12px rgba(23, 25, 28, 0.08);
}

/* Material Catalog Card - Strict Vertical Column (Never Squeezed or Split) */
.material-card {
    display: flex !important;
    flex-direction: column !important;
    height: 100% !important;
    background: #FFFFFF;
    border: 1px solid var(--color-fuge);
    border-radius: 2px;
    overflow: hidden;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease;
    box-sizing: border-box;
}

.material-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-bronze);
    box-shadow: 0 20px 45px -12px rgba(23, 25, 28, 0.12);
}

.material-card .material-thumb {
    width: 100% !important;
    height: 14rem !important;
    flex-shrink: 0 !important;
    position: relative;
    overflow: hidden;
    background-color: var(--color-sand);
    display: block !important;
}

.material-card .material-thumb img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    display: block !important;
    transition: transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.material-card:hover .material-thumb img {
    transform: scale(1.08);
}

.material-card .material-body {
    flex: 1 1 auto !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: space-between !important;
    width: 100% !important;
    box-sizing: border-box;
}

.material-card.is-hidden {
    display: none !important;
}

/* Utilities for Clean Mobile Horizontal Scrolling */
.no-scrollbar::-webkit-scrollbar {
    display: none;
}
.no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

/* Dark Section Monolith */
.monolith-dark {
    background-color: var(--color-nero);
    color: #FFFFFF;
    border-top: 1px solid rgba(184, 151, 88, 0.2);
    border-bottom: 1px solid rgba(184, 151, 88, 0.2);
}

/* Material Filter Chips */
.filter-btn {
    transition: all 0.25s ease;
    border: 1px solid var(--color-fuge);
    background: #FFFFFF;
    color: var(--color-granit);
}

.filter-btn:hover {
    border-color: var(--color-bronze);
    color: var(--color-nero);
}

.filter-btn.active {
    background: var(--color-nero);
    color: #FFFFFF;
    border-color: var(--color-nero);
    box-shadow: 0 4px 12px rgba(23, 25, 28, 0.15);
}

/* Dual-Funnel Switcher Tabs */
.funnel-tab {
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

.funnel-tab.active {
    color: var(--color-nero);
    font-weight: 600;
}

.funnel-tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-bronze);
}

/* Smooth Image Zoom */
.img-zoom-container {
    overflow: hidden;
}

.img-zoom-container img {
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.stone-card:hover .img-zoom-container img {
    transform: scale(1.06);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: #D4D0C8;
    border-radius: 4px;
}

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

/* ==========================================================================
   SWISS FORM CONTROLS & CUSTOM RADIO CARDS (ZERO BLUE GUARANTEE)
   ========================================================================== */

/* Custom Swiss Radio Card Component */
.radio-card {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border: 1.5px solid var(--color-fuge);
    border-radius: 2px;
    background-color: #FFFFFF;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    user-select: none;
}

.radio-card:hover {
    border-color: var(--color-natagrot);
    background-color: rgba(174, 24, 43, 0.02);
}

.radio-card:has(input:checked),
.radio-card.active {
    border-color: var(--color-natagrot) !important;
    background-color: rgba(174, 24, 43, 0.04) !important;
    box-shadow: 0 0 0 1px var(--color-natagrot);
}

/* Custom Radio Dot Indicator */
.radio-dot {
    width: 20px;
    height: 20px;
    min-width: 20px;
    border-radius: 50%;
    border: 2px solid #D1D5DB;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #FFFFFF;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    flex-shrink: 0;
}

.radio-card:hover .radio-dot {
    border-color: var(--color-natagrot);
}

.radio-card:has(input:checked) .radio-dot,
.radio-card.active .radio-dot {
    border-color: var(--color-natagrot) !important;
    background-color: #FFFFFF;
}

.radio-dot-inner {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--color-natagrot);
    transform: scale(0);
    transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.radio-card:has(input:checked) .radio-dot .radio-dot-inner,
.radio-card.active .radio-dot .radio-dot-inner {
    transform: scale(1);
}

/* Swiss Form Input Focus & Selection States */
.natag-input {
    background-color: var(--color-chalk);
    border: 1px solid var(--color-fuge);
    color: var(--color-nero);
    transition: border-color 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.2s ease;
    outline: none !important;
}

.natag-input:focus {
    background-color: #FFFFFF !important;
    border-color: var(--color-natagrot) !important;
    box-shadow: 0 0 0 1.5px var(--color-natagrot) !important;
    outline: none !important;
}

/* Remove default webkit blue tap highlights */
* {
    -webkit-tap-highlight-color: transparent;
}