/* --- CSS Variables & Theme --- */
:root {
    /* Colors - Light Slate Gray Theme */
    --color-bg: #cbd5e1;
    --color-bg-alt: #cbd5e1;
    --color-surface: rgba(255, 255, 255, 0.95);
    --color-surface-hover: rgba(255, 255, 255, 1);
    --color-border: rgba(15, 23, 42, 0.1);

    --color-primary: #ed3237;
    /* Maitri Red */
    --color-primary-hover: #d62227;
    --color-secondary: #ff4d52;
    /* Lighter red for accents */

    --color-text: #334155;
    --color-text-muted: #0f172a;
    --color-text-heading: #0f172a;



    /* Typography */
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;

    /* Layout */
    --nav-height: 80px;
    --border-radius: 12px;
    --border-radius-lg: 24px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base Styles --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-main);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--color-text-heading);
    line-height: 1.2;
    margin-bottom: 1rem;
}

a {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
}

.bg-alt {
    background-color: var(--color-bg-alt);
}

.section-header {
    margin-bottom: 4rem;
    max-width: 600px;
}

.section-header.center {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    color: var(--color-primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-full {
    width: 100%;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #000 !important;
    box-shadow: 0 4px 14px rgba(237, 50, 55, 0.3);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(237, 50, 55, 0.4);
    color: #000 !important;
}

.btn-outline {
    background-color: transparent;
    border-color: var(--color-border);
    color: var(--color-text-heading);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background-color: rgba(237, 50, 55, 0.05);
}

/* --- Utilities --- */
.glass-card {
    background: var(--color-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-normal), border-color var(--transition-normal), background var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
    transform: translateY(-5px);
    border-color: rgba(237, 50, 55, 0.3);
    background: var(--color-surface-hover);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    z-index: 1000;
    transition: background var(--transition-normal), backdrop-filter var(--transition-normal), border-bottom var(--transition-normal);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.1rem;
    line-height: 1.1;
    color: var(--color-text-heading);
}

.logo-icon {
    font-size: 1.75rem;
    color: var(--color-primary);
}

.nav-menu {
    display: flex;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text-heading);
}

.nav-link:not(.btn):hover {
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-heading);
    font-size: 1.5rem;
    cursor: pointer;
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--nav-height);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at center, var(--color-surface) 0%, var(--color-bg) 100%);
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 10s infinite ease-in-out alternate;
}

.glow-1 {
    width: 500px;
    height: 500px;
    background: var(--color-primary);
    top: -100px;
    right: -100px;
}

.glow-2 {
    width: 400px;
    height: 400px;
    background: var(--color-secondary);
    bottom: -50px;
    left: -150px;
    animation-delay: -5s;
}

@keyframes float {
    0% {
        transform: translate(0, 0) scale(1);
    }

    100% {
        transform: translate(-30px, 50px) scale(1.1);
    }
}

.hero-container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
    width: 100%;
}

.hero-content {
    max-width: 800px;
}

.hero-visual {
    position: relative;
    width: 100%;
    height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
}

#hero-canvas3d {
    width: 100% !important;
    height: 100% !important;
    display: block;
    cursor: grab;
}

#hero-canvas3d:active {
    cursor: grabbing;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(237, 50, 55, 0.1);
    color: var(--color-primary);
    border: 1px solid rgba(237, 50, 55, 0.2);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-title span {
    background: linear-gradient(135deg, var(--color-primary), #ff7679);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.hero-desc {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: 2.5rem;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
}

/* --- About Section --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

.stats {
    display: flex;
    gap: 3rem;
    margin-top: 3rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: var(--color-primary);
    line-height: 1;
}

.stat-label {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.5rem;
}

.about-image-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: relative;
}

.image-card {
    padding: 2.5rem;
}

.image-card.offset {
    margin-left: 3rem;
}

.icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(237, 50, 55, 0.1);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

/* --- Products Section --- */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.product-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-icon {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.product-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.product-desc {
    color: var(--color-text-muted);
    margin-bottom: 2rem;
    flex-grow: 1;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-primary);
    font-weight: 600;
}

.product-link:hover {
    color: var(--color-primary-hover);
    gap: 0.75rem;
}

/* --- Infrastructure Section --- */
.glass-panel {
    background: var(--color-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 4rem;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.glass-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(237, 50, 55, 0.15) 0%, transparent 70%);
    z-index: 0;
}

.infra-text {
    position: relative;
    z-index: 1;
}

.infra-text p {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.feature-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text);
}

.feature-list i {
    color: var(--color-primary);
}

.infra-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    min-height: 300px;
}

.circle-animation {
    position: relative;
    width: 250px;
    height: 250px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(237, 50, 55, 0.2);
    animation: pulse 4s infinite cubic-bezier(0.4, 0, 0.2, 1);
}

.circle-1 {
    width: 100%;
    height: 100%;
    animation-delay: 0s;
}

.circle-2 {
    width: 75%;
    height: 75%;
    animation-delay: 1s;
}

.circle-3 {
    width: 50%;
    height: 50%;
    animation-delay: 2s;
}

.center-icon {
    font-size: 3rem;
    color: var(--color-primary);
    z-index: 2;
    background: var(--color-bg);
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    box-shadow: 0 0 30px rgba(237, 50, 55, 0.2);
}

@keyframes pulse {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }

    50% {
        opacity: 1;
    }

    100% {
        transform: scale(1.2);
        opacity: 0;
    }
}

/* --- Contact Section --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-card {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    padding: 1.5rem;
}

.info-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-top: 0.25rem;
}

.info-card h4 {
    margin-bottom: 0.25rem;
}

.info-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.contact-form h3 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-text);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(237, 50, 55, 0.1);
}

.form-group select option {
    background: var(--color-bg);
    color: var(--color-text);
}

/* --- Footer --- */
.footer {
    background: var(--color-surface);
    padding-top: 5rem;
    border-top: 1px solid var(--color-border);
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand p {
    color: var(--color-text-muted);
    margin-top: 1.5rem;
    max-width: 300px;
}

.footer-links h4,
.footer-legal h4 {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-links ul li,
.footer-legal ul li {
    margin-bottom: 0.75rem;
}

.footer-links a,
.footer-legal a {
    color: var(--color-text-muted);
}

.footer-links a:hover,
.footer-legal a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: 1.5rem 0;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* --- Responsive Design --- */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
        padding-top: 2rem;
        padding-bottom: 2rem;
    }

    .hero-content {
        max-width: 100%;
        margin: 0 auto;
    }

    .hero-visual {
        height: 380px;
        order: -1;
        /* Place 3D bag above text on mobile */
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .image-card.offset {
        margin-left: 0;
    }

    .glass-panel {
        grid-template-columns: 1fr;
        padding: 2.5rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--nav-height));
        background: var(--color-bg);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transform: translateX(100%);
        transition: transform var(--transition-normal);
        border-top: 1px solid var(--color-border);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-list {
        flex-direction: column;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .feature-list {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

/* --- Inner Pages Hero --- */
.inner-hero {
    padding-top: calc(var(--nav-height) + 4rem);
    padding-bottom: 4rem;
    text-align: center;
    background: radial-gradient(circle at top, var(--color-surface) 0%, var(--color-bg) 100%);
    border-bottom: 1px solid var(--color-border);
}

.inner-title {
    font-size: 3rem;
    font-weight: 800;
}

.inner-title span {
    color: var(--color-primary);
}

.inner-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-muted);
}

/* --- 3D Visualizer Layout & Styles --- */
.visualizer-layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
    align-items: start;
}

.canvas-wrapper {
    position: relative;
    width: 100%;
    height: 600px;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    background: radial-gradient(circle at center, var(--color-surface) 0%, var(--color-bg) 100%);
    border: 1px solid var(--color-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

#canvas3d {
    width: 100% !important;
    height: 100% !important;
    display: block;
    cursor: grab;
}

#canvas3d:active {
    cursor: grabbing;
}

/* Overlays on Canvas */
.canvas-overlay {
    position: absolute;
    z-index: 10;
    pointer-events: none;
}

.canvas-instructions {
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(8px);
    color: #ffffff;
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    white-space: nowrap;
}

.canvas-instructions i {
    color: var(--color-primary);
}

.canvas-actions {
    top: 1.5rem;
    right: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    pointer-events: auto;
}

.canvas-btn {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-heading);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    transition: all var(--transition-fast);
}

.canvas-btn:hover {
    background: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
    transform: scale(1.05);
}

.canvas-loader {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 20;
    transition: opacity 0.5s ease;
    gap: 1rem;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(237, 50, 55, 0.1);
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Sidebar Customizer Controls */
.customizer-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.control-panel-card {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.panel-title {
    font-size: 1.5rem;
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 0.75rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.panel-title i {
    color: var(--color-primary);
}

.control-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.control-section-header {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-heading);
    margin-bottom: 0.25rem;
}

/* Button options for products & environments */
.option-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.option-btn {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: 0.75rem 0.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    text-align: center;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-muted);
}

.option-btn i {
    font-size: 1.25rem;
}

.option-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.option-btn.active {
    background: rgba(237, 50, 55, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: 0 4px 10px rgba(237, 50, 55, 0.1);
}

/* Dimension inputs */
.slider-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.slider-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.slider-val {
    font-weight: 700;
    color: var(--color-text-heading);
}

.slider-control {
    width: 100%;
    height: 6px;
    background: var(--color-border);
    border-radius: 5px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.slider-control::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.slider-control::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* Color Palette Swatches */
.swatch-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.swatch-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid #ffffff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
    position: relative;
}

.swatch-btn:hover {
    transform: scale(1.15);
}

.swatch-btn.active {
    border-color: var(--color-primary);
    transform: scale(1.1);
}

.custom-color-picker-wrapper {
    position: relative;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid #ffffff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.custom-color-picker-wrapper:hover {
    transform: scale(1.15);
}

.custom-color-picker {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    border: none;
    padding: 0;
    cursor: pointer;
    background: none;
}

/* File Upload & Input Styling */
.custom-file-upload {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem;
    border: 1px dashed var(--color-border);
    border-radius: var(--border-radius);
    background: var(--color-bg);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 600;
    color: var(--color-text-muted);
}

.custom-file-upload:hover {
    border-color: var(--color-primary);
    background: rgba(237, 50, 55, 0.02);
    color: var(--color-primary);
}

.file-info {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.remove-file-btn {
    background: none;
    border: none;
    color: #ef4444;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0;
}

.remove-file-btn:hover {
    text-decoration: underline;
}

/* 3D Promotion Cards */
.promotion-card {
    background: linear-gradient(135deg, rgba(237, 50, 55, 0.05) 0%, rgba(26, 26, 26, 0.05) 100%);
    border: 1px dashed var(--color-primary);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.promotion-card-title {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
}

.promotion-card-title span {
    color: var(--color-primary);
}

.promotion-card-desc {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 1.5rem auto;
}

/* Responsive Overrides */
@media (max-width: 992px) {
    .visualizer-layout {
        grid-template-columns: 1fr;
    }

    .canvas-wrapper {
        height: 450px;
    }
}

@media (max-width: 576px) {
    .canvas-wrapper {
        height: 350px;
    }

    .option-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Valued Clients & Partners Grid --- */
.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.client-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 1.5rem 1.25rem;
    text-align: center;
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.client-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 15px -3px rgba(237, 50, 55, 0.1);
}

.client-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(237, 50, 55, 0.08);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.client-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text-heading);
    margin-bottom: 0;
}