/* Import Google Fonts - Outfit & Inter */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    /* Color Palette - Light Mode Styling */
    --bg-dark: #f8fafc;
    --bg-card: rgba(255, 255, 255, 0.75);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --primary: #4f46e5;
    --primary-glow: rgba(79, 70, 229, 0.06);
    --primary-hover: #4338ca;
    --accent: #059669;
    --accent-glow: rgba(5, 150, 105, 0.06);
    --accent-hover: #047857;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --text-white: #ffffff;
    --text-main: #334155;
    --text-muted: #64748b;
    --text-dark: #0f172a;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --border-glass: rgba(15, 23, 42, 0.08);
    --shadow-glass: 0 10px 30px -10px rgba(15, 23, 42, 0.08), 0 1px 3px rgba(15, 23, 42, 0.04);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Dark Mode Theme ─── */
[data-theme="dark"] {
    --bg-dark: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.85);
    --bg-card-hover: rgba(30, 41, 59, 0.98);
    --text-main: #cbd5e1;
    --text-muted: #94a3b8;
    --text-dark: #f1f5f9;
    --border-glass: rgba(255, 255, 255, 0.08);
    --shadow-glass: 0 10px 30px -10px rgba(0,0,0,0.4), 0 1px 3px rgba(0,0,0,0.3);
    --primary-glow: rgba(99, 102, 241, 0.12);
}

[data-theme="dark"] body {
    background-image:
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.08) 0px, transparent 50%);
}

[data-theme="dark"] header,
[data-theme="dark"] .nav-menu-wrapper { background: #0f172a; }
[data-theme="dark"] .item-card,
[data-theme="dark"] .modal-content,
[data-theme="dark"] .form-control {
    background: var(--bg-card);
    color: var(--text-main);
    border-color: var(--border-glass);
}
[data-theme="dark"] .form-control {
    background: rgba(15, 23, 42, 0.6);
    color: var(--text-dark);
}
[data-theme="dark"] .form-control::placeholder { color: #475569; }
[data-theme="dark"] .stats-card { background: rgba(30,41,59,0.9); }


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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.6;
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.05) 0px, transparent 50%),
        radial-gradient(at 50% 0%, rgba(99, 102, 241, 0.05) 0px, transparent 40%);
    background-attachment: fixed;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-dark);
    font-weight: 700;
}

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

button, input, select, textarea {
    font-family: inherit;
}

/* Layout Containers */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(248, 250, 252, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-glass);
    transition: var(--transition-smooth);
}

header.scrolled {
    padding: 10px 0;
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    transition: var(--transition-smooth);
}

header.scrolled .nav-container {
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--text-dark) 30%, var(--primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo i {
    font-size: 1.8rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-grow: 1;
    margin-left: 48px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-dark);
}

.nav-auth {
    display: flex;
    align-items: center;
}

.nav-auth-buttons {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Common Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, #4f46e5 100%);
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
    background: linear-gradient(135deg, #4f46e5 0%, #4338ca 100%);
}

.btn-secondary {
    background: transparent;
    color: var(--text-dark);
    border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
    background: rgba(15, 23, 42, 0.03);
    border-color: rgba(15, 23, 42, 0.15);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent) 0%, #059669 100%);
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-danger {
    background: var(--danger);
    color: var(--text-white);
}

.btn-danger:hover {
    background: var(--danger-hover);
    transform: translateY(-1px);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
    border-radius: var(--border-radius-sm);
}

.btn-full {
    width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    color: var(--text-dark);
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: inline;
    flex-flow: column wrap;
    gap: 24px;
}

.badge {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(79, 70, 229, 0.06);
    color: var(--primary);
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(79, 70, 229, 0.15);
}

.hero h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--text-dark) 40%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero h1 span {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-top: 10px;
}

/* Premium Visual Elements */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-glow-circle {
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    z-index: 1;
    animation: float-glow 8s ease-in-out infinite;
}

.hero-mockup {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 380px;
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-glass);
    padding: 24px;
    transform: perspective(1000px) rotateY(-15deg) rotateX(10deg);
    transition: var(--transition-smooth);
}

.hero-mockup:hover {
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg) translateY(-10px);
}

.mockup-header {
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 16px;
    margin-bottom: 16px;
}

.mockup-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 1.5rem;
}

.mockup-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.mockup-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.mockup-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mockup-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--border-radius-md);
    background: rgba(15, 23, 42, 0.02);
    border: 1px solid var(--border-glass);
}

.mockup-item i {
    font-size: 1.2rem;
    color: var(--primary);
}

.mockup-qr {
    display: flex;
    justify-content: center;
    margin: 16px 0 8px;
    animation: pulse-qr 2s infinite alternate;
}

.mockup-qr svg, .mockup-qr img {
    padding: 12px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

/* Glassmorphism Section Standard */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.section-header h2 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--text-dark) 50%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* How It Works (Steps) */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    padding: 32px 24px;
    position: relative;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.step-card:hover {
    transform: translateY(-8px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.1);
}

.step-number {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 3rem;
    font-weight: 800;
    color: rgba(15, 23, 42, 0.04);
    line-height: 1;
    font-family: var(--font-heading);
    transition: var(--transition-smooth);
}

.step-card:hover .step-number {
    color: rgba(79, 70, 229, 0.08);
}

.step-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--border-radius-md);
    background: rgba(99, 102, 241, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.step-card:nth-child(even) .step-icon {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent);
    border-color: rgba(16, 185, 129, 0.2);
}

.step-card h3 {
    font-size: 1.25rem;
}

.step-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    padding: 40px 32px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(16, 185, 129, 0.3);
    box-shadow: 0 12px 40px rgba(16, 185, 129, 0.1);
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--primary);
    border: 1px solid var(--border-glass);
}

.feature-card h3 {
    font-size: 1.4rem;
}

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

/* Mock Categories Carousel / Gallery */
.use-cases {
    background: rgba(15, 23, 42, 0.02);
    border-top: 1px solid var(--border-glass);
    border-bottom: 1px solid var(--border-glass);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.use-case-card {
    border-radius: var(--border-radius-md);
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-glass);
    height: 250px;
    cursor: pointer;
}

.use-case-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
    filter: brightness(0.6) contrast(1.1);
}

.use-case-card:hover .use-case-img {
    transform: scale(1.1);
    filter: brightness(0.4) contrast(1.1);
}

.use-case-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 24px;
    background: linear-gradient(to top, rgba(9, 13, 22, 0.9) 0%, transparent 100%);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.use-case-card i {
    font-size: 1.5rem;
    color: var(--accent);
}

.use-case-card h3 {
    font-size: 1.2rem;
    color: #ffffff;
}

/* FAQ Accordion */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-question {
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.05rem;
    user-select: none;
}

.faq-question i {
    transition: var(--transition-smooth);
    color: var(--primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding: 0 24px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-item.active .faq-answer {
    padding-bottom: 24px;
    max-height: 200px; /* arbitrary height to slide down */
}

/* Footer styling */
footer {
    border-top: 1px solid var(--border-glass);
    padding: 80px 0 40px;
    background: rgba(241, 245, 249, 0.95);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 60px;
}

.footer-logo-side {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.footer-logo-side p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.footer-socials {
    display: flex;
    gap: 16px;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(15, 23, 42, 0.03);
    border: 1px solid var(--border-glass);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: var(--transition-smooth);
}

.social-icon:hover {
    color: var(--text-white);
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-3px);
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.footer-column h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--text-dark);
    padding-left: 4px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 40px;
    border-top: 1px solid var(--border-glass);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Modals (Auth, QR view, Add item) */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.modal.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: #ffffff;
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-glass);
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    max-height: 90vh;
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-glass);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.3rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--text-dark);
    background: rgba(15, 23, 42, 0.05);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
}

.modal-content form {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
}

/* Forms styling */
.form-group {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-control {
    background: #ffffff;
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 12px 16px;
    color: var(--text-dark);
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

select.form-control option {
    background-color: #ffffff;
    color: var(--text-dark);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-tip {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Auth Modal Tabs */
.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-glass);
    margin-bottom: 24px;
}

.auth-tab {
    flex: 1;
    text-align: center;
    padding: 16px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-muted);
    transition: var(--transition-smooth);
    border-bottom: 2px solid transparent;
}

.auth-tab.active {
    color: var(--text-dark);
    border-bottom-color: var(--primary);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

/* Image Upload Widget */
.upload-widget {
    border: 2px dashed var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.upload-widget:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.02);
}

.upload-widget i {
    font-size: 2rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    display: block;
}

.upload-widget span {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.upload-preview {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
    z-index: 2;
}

.upload-remove {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 3;
    display: none;
}

.upload-widget.has-image .upload-preview,
.upload-widget.has-image .upload-remove {
    display: flex;
}

.upload-widget.has-image i,
.upload-widget.has-image span {
    opacity: 0;
}

/* Dashboard Section (Authenticated View) */
.dashboard-section {
    padding: 120px 0 80px;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.dashboard-userinfo h2 {
    font-size: 2rem;
    margin-bottom: 4px;
}

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

.dashboard-actions {
    display: flex;
    gap: 16px;
}

.items-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.item-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.item-card:hover {
    transform: translateY(-6px);
    border-color: rgba(99, 102, 241, 0.25);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.item-card-image {
    height: 180px;
    width: 100%;
    object-fit: cover;
    background: #f1f5f9;
    border-bottom: 1px solid var(--border-glass);
}

.item-card-fallback-img {
    height: 180px;
    width: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(16, 185, 129, 0.2) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    gap: 8px;
    border-bottom: 1px solid var(--border-glass);
}

.item-card-fallback-img i {
    font-size: 2.5rem;
    color: var(--primary);
}

.item-card-body {
    padding: 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.item-card-badge {
    align-self: flex-start;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    background: rgba(79, 70, 229, 0.08);
    color: var(--primary);
}

.item-card-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.item-card-details {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.item-card-details span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.item-card-details i {
    color: var(--primary);
    width: 16px;
}

.item-card-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-glass);
    background: rgba(0, 0, 0, 0.1);
    display: flex;
    gap: 12px;
}

.item-card-footer button, .item-card-footer a {
    flex: 1;
}

.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 40px;
    background: var(--bg-card);
    border: 2px dashed var(--border-glass);
    border-radius: var(--border-radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.empty-state i {
    font-size: 3.5rem;
    color: var(--text-muted);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.4rem;
}

.empty-state p {
    color: var(--text-muted);
    font-size: 0.95rem;
    max-width: 400px;
    margin-bottom: 12px;
}

/* Public QR Page styling */
.public-container {
    max-width: 600px;
    margin: 40px auto;
    padding: 0 20px;
}

.public-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-glass);
    overflow: hidden;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.public-hero {
    height: 250px;
    position: relative;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3) 0%, rgba(16, 185, 129, 0.3) 100%);
    border-bottom: 1px solid var(--border-glass);
}

.public-hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.public-hero-icon {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--primary);
}

.public-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--danger);
    color: white;
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(239, 68, 68, 0.4);
    display: flex;
    align-items: center;
    gap: 6px;
    animation: pulse-danger 2s infinite;
}

.public-body {
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.public-owner-info {
    text-align: center;
    border-bottom: 1px solid var(--border-glass);
    padding-bottom: 24px;
}

.public-owner-info h2 {
    font-size: 1.8rem;
    margin-bottom: 6px;
}

.public-owner-info p {
    color: var(--text-muted);
}

.public-owner-msg {
    background: rgba(79, 70, 229, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 20px;
    text-align: center;
    font-style: italic;
    color: var(--text-main);
    position: relative;
}

.public-owner-msg i.fa-quote-left {
    position: absolute;
    top: -10px;
    left: 20px;
    font-size: 1.2rem;
    color: rgba(79, 70, 229, 0.3);
    background: #ffffff;
    padding: 0 6px;
}

.public-contact-actions {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.public-map-box {
    margin-top: 10px;
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    background: rgba(255, 255, 255, 0.01);
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
}

.public-map-box i {
    font-size: 2rem;
    color: var(--accent);
}

.public-map-box p {
    font-size: 0.85rem;
    color: var(--text-muted);
    max-width: 320px;
}

.location-status {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent);
    margin-top: 4px;
}

.location-status.error {
    color: var(--danger);
}

/* Animations */
@keyframes float-glow {
    0%, 100% {
        transform: translateY(0) scale(1);
        opacity: 0.8;
    }
    50% {
        transform: translateY(-20px) scale(1.1);
        opacity: 1;
    }
}

@keyframes pulse-qr {
    0% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4);
    }
    100% {
        box-shadow: 0 0 0 12px rgba(99, 102, 241, 0);
    }
}

@keyframes pulse-danger {
    0% {
        transform: scale(1);
        box-shadow: 0 4px 10px rgba(239, 68, 68, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 4px 18px rgba(239, 68, 68, 0.7);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 4px 10px rgba(239, 68, 68, 0.4);
    }
}

/* Responsive Rules */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 60px;
    }
    
    .badge {
        align-self: center;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero p {
        margin: 0 auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-mockup {
        transform: none;
        margin: 0 auto;
    }
    
    .hero-mockup:hover {
        transform: translateY(-10px);
    }
    
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .items-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-container {
        position: relative;
    }

    .nav-menu-wrapper {
        display: none;
        flex-direction: column;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        width: 100vw;
        background: #ffffff;
        padding: 28px 24px;
        border-bottom: 2px solid var(--border-glass);
        box-shadow: 0 12px 40px rgba(15, 23, 42, 0.12);
        gap: 20px;
        align-items: stretch;
        z-index: 9999;
    }
    
    .nav-menu-wrapper.active {
        display: flex;
    }
    
    .nav-links {
        flex-direction: column;
        gap: 0;
        width: 100%;
        text-align: left;
    }

    .nav-links li {
        border-bottom: 1px solid var(--border-glass);
    }

    .nav-links a {
        display: block;
        padding: 14px 0;
        font-size: 1rem;
        font-weight: 600;
    }
    
    .nav-auth {
        width: 100%;
        display: flex;
        justify-content: stretch;
        border-top: 2px solid var(--border-glass);
        padding-top: 20px;
    }

    .nav-auth > * {
        width: 100%;
    }
    
    .nav-auth-buttons {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
        width: 100%;
    }

    .nav-auth-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-container {
        height: 70px;
        position: relative;
    }
    
    .hero-mockup {
        width: 92%;
        max-width: 320px;
        margin: 0 auto;
    }
    
    .steps-grid, .features-grid, .use-cases-grid, .items-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero h1 {
        font-size: 2.4rem;
    }
    
    .modal-content {
        max-height: 95vh;
        border-radius: var(--border-radius-md);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    
    .dashboard-actions {
        width: 100%;
    }
    
    .dashboard-actions button {
        flex: 1;
    }
}

/* Modal Open Helper */
body.modal-open {
    overflow: hidden;
}

/* Active class for dynamic state toggling (JS uses this) */
.d-none {
    display: none !important;
}

.d-flex {
    display: flex !important;
}

.d-block {
    display: block !important;
}

.text-center {
    text-align: center;
}

/* QR Code details inside modal */
.qr-modal-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
}

.qr-display-card {
    background: white;
    padding: 24px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-download-options {
    display: flex;
    gap: 16px;
    width: 100%;
}

/* Dashboard Tabs for Admin role */
.dashboard-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--border-glass);
    padding-bottom: 12px;
}

.dashboard-tabs .tab-btn {
    background: transparent;
    border: none;
    padding: 10px 20px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-smooth);
}

.dashboard-tabs .tab-btn:hover {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.dashboard-tabs .tab-btn.active {
    color: #ffffff;
    background: var(--primary);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

/* Admin Owner Badge inside Item Cards */
.admin-owner-badge {
    margin-top: 10px;
    padding: 6px 10px;
    background: rgba(15, 23, 42, 0.04);
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    border: 1px dashed var(--border-glass);
}

/* ─── Scan Counter Badge ─── */
.scan-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary);
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 999px;
    padding: 3px 10px;
    margin-top: 8px;
}

/* ─── Item Status Badge ─── */
.item-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 999px;
    padding: 3px 10px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.item-status-badge.active {
    color: #059669;
    background: rgba(5, 150, 105, 0.1);
    border: 1px solid rgba(5, 150, 105, 0.3);
}

.item-status-badge.inactive {
    color: #dc2626;
    background: rgba(220, 38, 38, 0.08);
    border: 1px solid rgba(220, 38, 38, 0.2);
}

/* ─── Copy Link Button ─── */
.btn-copy-link {
    position: relative;
}

.btn-copy-link::after {
    content: '¡Copiado!';
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) scale(0.8);
    background: var(--primary);
    color: white;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.78rem;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: all 0.2s ease;
}

.btn-copy-link.copied::after {
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

/* ─── Form Submit Loading State ─── */
.btn.is-loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn.is-loading i {
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ─── Item card inactive overlay ─── */
.item-card.inactive-item {
    opacity: 0.6;
    filter: grayscale(0.4);
}

/* ─── Status toggle button ─── */
.btn-toggle-status {
    font-size: 0.75rem;
    padding: 5px 10px;
}

/* ════════════════════════════════════════════════════════
   NEW FEATURES — Stats, Filter, Dark Toggle, Modals v2
   ════════════════════════════════════════════════════════ */

/* ─── Dark Mode Toggle Button ─── */
.btn-dark-toggle {
    background: transparent;
    border: 1px solid var(--border-glass);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: var(--transition-smooth);
    flex-shrink: 0;
}
.btn-dark-toggle:hover { color: var(--primary); border-color: var(--primary); transform: rotate(20deg); }

/* ─── Stats Panel ─── */
.stats-panel {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 36px;
}
.stats-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-md);
    padding: 20px 24px;
    box-shadow: var(--shadow-glass);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition-smooth);
}
.stats-card:hover { transform: translateY(-2px); box-shadow: 0 16px 40px -10px rgba(15,23,42,0.12); }
.stats-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}
.stats-icon.indigo  { background: rgba(79,70,229,0.12); color: #4f46e5; }
.stats-icon.emerald { background: rgba(5,150,105,0.12); color: #059669; }
.stats-icon.amber   { background: rgba(245,158,11,0.12); color: #d97706; }
.stats-icon.rose    { background: rgba(239,68,68,0.1); color: #ef4444; }
.stats-icon.violet  { background: rgba(139,92,246,0.12); color: #7c3aed; }
.stats-label { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; margin-bottom: 4px; }
.stats-value { font-size: 1.8rem; font-weight: 800; color: var(--text-dark); font-family: var(--font-heading); line-height: 1; }
.stats-sub   { font-size: 0.75rem; color: var(--text-muted); margin-top: 4px; }

/* ─── Category Filter Chips ─── */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}
.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    border: 1.5px solid var(--border-glass);
    background: var(--bg-card);
    color: var(--text-muted);
    transition: var(--transition-smooth);
    user-select: none;
    white-space: nowrap;
}
.filter-chip:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-glow); }
.filter-chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.filter-chip .chip-count {
    background: rgba(255,255,255,0.25);
    border-radius: 999px;
    padding: 0 6px;
    font-size: 0.72rem;
    min-width: 18px;
    text-align: center;
}

/* ─── Search Bar ─── */
.search-bar-wrapper {
    position: relative;
    flex: 1;
    min-width: 200px;
    max-width: 340px;
}
.search-bar-wrapper i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}
.search-bar {
    width: 100%;
    padding: 9px 14px 9px 38px;
    border: 1.5px solid var(--border-glass);
    border-radius: 999px;
    font-size: 0.88rem;
    font-family: var(--font-body);
    background: var(--bg-card);
    color: var(--text-dark);
    outline: none;
    transition: var(--transition-smooth);
}
.search-bar:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,0.1); }

/* ─── Avatar/Profile Button ─── */
.avatar-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    flex-shrink: 0;
}
.avatar-btn:hover { transform: scale(1.1); box-shadow: 0 4px 16px rgba(79,70,229,0.4); }

/* ─── Profile Modal ─── */
.profile-avatar-large {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    color: white;
    font-size: 2rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 8px 24px rgba(79,70,229,0.3);
}

/* ─── Scan History Modal ─── */
.scan-history-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: 360px;
    overflow-y: auto;
    padding-right: 4px;
}
.scan-history-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 14px;
    border-radius: var(--border-radius-sm);
    background: rgba(15,23,42,0.03);
    border: 1px solid var(--border-glass);
    font-size: 0.85rem;
}
.scan-history-icon {
    width: 32px;
    height: 32px;
    background: rgba(79,70,229,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
    font-size: 0.75rem;
}
.scan-history-meta { flex: 1; }
.scan-history-time { font-weight: 600; color: var(--text-dark); }
.scan-history-ip { color: var(--text-muted); font-size: 0.78rem; margin-top: 2px; }
.scan-history-ua { color: var(--text-muted); font-size: 0.72rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 260px; }

/* ─── WhatsApp Share Float in Dashboard ─── */
.wa-share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #25d366;
    color: white;
    border: none;
    border-radius: 999px;
    padding: 6px 14px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
}
.wa-share-btn:hover { background: #128c7e; transform: scale(1.04); }

/* ─── Stats responsive ─── */
@media (max-width: 1024px) {
    .stats-panel { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .stats-panel { grid-template-columns: 1fr 1fr; gap: 12px; }
    .stats-value { font-size: 1.4rem; }
    .filter-bar { gap: 8px; }
    .search-bar-wrapper { max-width: 100%; min-width: 0; width: 100%; }
}