:root {
    --primary-color: #000000;
    --bg-color: #f4f4f7;
    --card-bg: #ffffff;
    --text-main: #333333;
    --text-muted: #666666;
    --border-color: #e5e7eb;
    --error-color: #dc2626;
    --success-color: #16a34a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Navbar & Responsive Hamburger Menu */
.navbar {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: relative;
}

.nav-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-small {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-color);
}

.nav-brand-link {
    text-decoration: none;
    color: inherit;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-main);
    padding: 0.25rem 0.5rem;
}

@media (max-width: 600px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--card-bg);
        border-bottom: 1px solid var(--border-color);
        padding: 1rem 1.5rem;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
        z-index: 1000;
        align-items: flex-start;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a, .nav-links button {
        width: 100%;
        text-align: left;
        padding: 0.75rem 0;
    }

    .nav-links button {
        margin-top: 0.5rem;
    }
}

.container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem 1rem;
}

.card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    width: 100%;
    max-width: 450px;
}

.brand {
    text-align: center;
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 0.5rem;
}

#auth-subtitle, .card p {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

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

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
}

input, textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    box-sizing: border-box;
    transition: border-color 0.2s;
}

textarea {
    resize: vertical;
    min-height: 80px;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

input:disabled {
    background-color: #f9fafb;
    color: #9ca3af;
    cursor: not-allowed;
}

.btn {
    width: 100%;
    background-color: var(--primary-color);
    color: white;
    padding: 0.875rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
    box-sizing: border-box;
    display: inline-block;
}

.btn:hover {
    opacity: 0.9;
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-sm {
    padding: 0.5rem 1rem;
    width: auto;
    font-size: 0.875rem;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-outline:hover {
    background-color: var(--bg-color);
}

.hidden {
    display: none !important;
}

.is-loading {
    opacity: 0.6;
    pointer-events: none;
    user-select: none;
    transition: opacity 0.3s ease;
}

.message {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 6px;
    text-align: center;
    font-size: 0.875rem;
}

.message.success {
    background-color: #dcfce7;
    color: var(--success-color);
    border: 1px solid #bbf7d0;
}

.message.error {
    background-color: #fee2e2;
    color: var(--error-color);
    border: 1px solid #fecaca;
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    width: 90%;
    max-width: 450px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.modal h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.profile-display-card {
    background-color: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.profile-detail {
    margin-bottom: 1rem;
}

.profile-detail strong {
    display: block;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.profile-detail span {
    font-size: 1rem;
    color: var(--text-main);
}

/* Subscription Grid Styles */
.subscription-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.subscription-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1.25rem 1rem;
    text-align: center;
    transition: border-color 0.2s, box-shadow 0.2s;
    cursor: pointer;
}

.subscription-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.subscription-card h4 {
    margin: 0 0 0.5rem 0;
    color: var(--primary-color);
    font-size: 1rem;
}

.subscription-card p {
    margin: 0 0 1rem 0;
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.subscription-card .price {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

/* Sandboxed Payment Iframe */
.payment-iframe-container {
    width: 100%;
    margin-top: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: #f9fafb;
    padding: 0.5rem;
    box-sizing: border-box;
}

.payment-iframe {
    width: 100%;
    min-height: 600px;
    border: none;
    display: block;
}

/* Segmented Control Styles for 3-State Preferences */
.pref-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.pref-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #fff;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    gap: 1rem;
}

.pref-name {
    font-weight: 500;
    color: var(--text-main);
    flex-shrink: 0;
}

.toggle-group {
    display: flex;
    background: var(--bg-color);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    padding: 3px;
    flex: 1;
    max-width: 280px;
}

.toggle-btn {
    flex: 1;
    padding: 0.4rem 0.5rem;
    font-size: 0.85rem;
    border: none;
    background: transparent;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-muted);
    font-weight: 500;
    border-radius: 18px;
    margin: 0 2px;
}

.toggle-btn:hover {
    background: #e5e7eb;
}

.toggle-btn.active-dislike {
    background: #fee2e2;
    color: var(--error-color);
    font-weight: 600;
}

.toggle-btn.active-neutral {
    background: #fff;
    color: var(--text-main);
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.toggle-btn.active-favor {
    background: #dcfce7;
    color: var(--success-color);
    font-weight: 600;
}

@media (max-width: 500px) {
    .pref-row {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    .toggle-group {
        max-width: 100%;
    }
}

/* ===============================================
  UTILITY & EXTRACTED CLASSES (REPLACING INLINE)
===============================================
*/

/* General Layout & Spacing */
.m-0 { margin: 0; }
.mb-1 { margin-bottom: 1rem; }
.mb-1-5 { margin-bottom: 1.5rem; }
.mb-2 { margin-bottom: 2rem; }
.mt-0 { margin-top: 0; }
.mt-0-25 { margin-top: 0.25rem; }
.block-element { display: block; }
.flex-align-center { display: flex; align-items: center; }

/* Typography */
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.85rem; }
.text-09 { font-size: 0.9rem; }
.font-semibold { font-weight: 600; }

/* Form & Modal Layouts */
.form-row { display: flex; gap: 1rem; }
.flex-2 { flex: 2; }
.flex-1 { flex: 1; }
.divider { border: 0; border-top: 1px solid var(--border-color); margin: 1.5rem 0; }
.modal-buttons { display: flex; gap: 1rem; margin-top: 2rem; }
.btn-success { background-color: var(--success-color) !important; color: white !important; }

/* Global Components extracted from JS */
.app-footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

/* Authentication Flow (Login & Magic Links) */
.login-confirmation { text-align: center; padding: 20px 0; }
.login-confirmation-text { margin-bottom: 20px; color: var(--text-muted); }
.login-email-display { color: var(--primary-color); font-size: 1.1rem; }
.login-cancel-link { display: block; margin-top: 15px; color: var(--primary-color); text-decoration: none; font-size: 0.9rem; }

/* Profile Elements */
.verified-box {
    background-color: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.75rem;
    font-size: 0.875rem;
    color: #475569;
    margin-bottom: 1.5rem;
}
.verified-box strong { color: var(--primary-color); }
.profile-actions { display: flex; gap: 1rem; margin-top: 1.5rem; flex-wrap: wrap; }
.profile-actions .btn { flex: 1; min-width: 140px; text-align: center; text-decoration: none; }
.edit-link { margin-left: 8px; font-weight: 500; font-size: 0.8rem; color: var(--primary-color); }

/* Subscription Elements */
.card-subscription { max-width: 600px; }
.sub-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.5rem; }
.delivery-address-display { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1.5rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border-color); }
.active-subscription-badge { background: #dcfce7; color: var(--success-color); padding: 1rem; border-radius: 8px; border: 1px solid #bbf7d0; margin-bottom: 1.5rem; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.active-subscription-label { display: block; margin-bottom: 0.25rem; }
.cc-info-display { font-size: 0.95rem; font-weight: 500; color: #166534; display: flex; align-items: center; gap: 0.5rem; }
.cc-icon { margin-right: 4px; }
.btn-update-card { background: white; border-color: #bbf7d0; }
.pre-payment-section { margin-top: 1.5rem; text-align: center; }
.section-bordered { margin-top: 2.5rem; border-top: 1px solid var(--border-color); padding-top: 1.5rem; }
.auto-save-indicator { font-size: 0.8rem; font-weight: normal; color: var(--success-color); margin-left: 1rem; opacity: 0; transition: opacity 0.3s; }
.auto-save-indicator.saving { color: var(--text-muted); opacity: 1; }
.auto-save-indicator.saved { color: var(--success-color); opacity: 1; }
.loading-products { text-align: center; padding: 2rem; color: var(--text-muted); }
.card-selected { border-color: var(--success-color) !important; }
.payment-success-container { text-align: center; padding: 2rem 0; }
.payment-success-title { color: var(--success-color); margin-top: 0; }
.payment-success-desc { color: var(--text-muted); font-size: 0.9rem; }

/* Secure Checkout Iframe */
.checkout-body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    margin: 0;
    padding: 10px;
    background: #f9fafb;
}
.checkout-payment-element { margin-bottom: 20px; }
.checkout-error { color: #dc2626; font-size: 14px; margin-top: 10px; text-align: center; }
.secure-badge { text-align: center; font-size: 12px; color: #666; margin-top: 15px; display: flex; justify-content: center; align-items: center; gap: 5px; }
.checkout-loading-text { text-align: center; color: #666; }
.mock-payment-banner { background: #dcfce7; padding: 15px; border-radius: 6px; border: 1px solid #bbf7d0; color: #16a34a; text-align: center; margin-bottom: 1rem; }
/* Product Category Headers */
.category-header {
    grid-column: 1 / -1; /* Ensures it spans the full width if you ever make the grid multi-column */
    margin: 1.5rem 0 0.5rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 600;
}

/* Removes the extra gap above the very first category */
.category-header:first-child {
    margin-top: 0.5rem;
}

@media (max-width: 500px) {
    .category-header {
        font-size: 1rem; /* Slightly smaller on mobile to match proportions */
        margin-top: 1rem;
    }
}
@keyframes spin { 100% { transform: rotate(360deg); } }
.spinner-icon { animation: spin 1s linear infinite; color: var(--primary-color, #2d6a4f); }

/* ===============================================
   TOAST NOTIFICATION SYSTEM
=============================================== */
#toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
    pointer-events: none; /* Let clicks pass through the container */
}

.toast {
    min-width: 250px;
    max-width: 350px;
    padding: 1rem 1.25rem;
    border-radius: 8px;
    background: var(--card-bg);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-main);
    transform: translateX(120%);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55), opacity 0.3s ease;
    pointer-events: auto; /* Re-enable clicks on the toast itself */
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border: 1px solid var(--border-color);
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--error-color);
}

.toast.info {
    border-left: 4px solid var(--primary-color);
}

.toast.info {
    border-left: 4px solid var(--primary-color);
}

/* ===============================================
   MARKETING CAROUSEL
=============================================== */
.marketing-carousel {
    display: flex;
    overflow-x: auto;
    gap: 1rem;
    padding-bottom: 0.5rem; /* breathing room for scrollbar */
    margin-bottom: 1.5rem;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Hide scrollbar for Firefox */
}

/* Hide scrollbar for Chrome/Safari */
.marketing-carousel::-webkit-scrollbar {
    display: none;
}

.marketing-card {
    flex: 0 0 80%; /* Takes up 80% width on mobile, showing a peek of the next card */
    scroll-snap-align: start;
    background-color: #f8fafc;
    border: 1px dashed #cbd5e1;
    border-radius: 8px;
    padding: 1rem;
    box-sizing: border-box;
}

.marketing-card h4 {
    margin: 0 0 0.25rem 0;
    color: var(--primary-color);
    font-size: 0.9rem;
}

.marketing-card p {
    margin: 0;
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.3;
}

@media (min-width: 600px) {
    .marketing-card {
        flex: 1; /* Stretch evenly on larger screens */
    }
    .marketing-carousel {
        overflow-x: visible;
        padding-bottom: 0;
    }
}