/* ======================================================
   AI-Localize – SignFlow-Inspired Design System
   ====================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
    --sf-primary: #4f86f7;
    --sf-primary-dark: #3a6fd8;
    --sf-primary-light: #7ba4fa;
    --sf-primary-subtle: rgba(79, 134, 247, 0.08);
    --sf-navy: #011627;
    --sf-navy-light: #1b2a4a;
    --sf-bg: #f8f9fa;
    --sf-white: #ffffff;
    --sf-gray-50: #f8f9fa;
    --sf-gray-100: #f1f3f5;
    --sf-gray-200: #e9ecef;
    --sf-gray-300: #dee2e6;
    --sf-gray-400: #ced4da;
    --sf-gray-500: #adb5bd;
    --sf-gray-600: #6c757d;
    --sf-gray-700: #495057;
    --sf-gray-800: #343a40;
    --sf-success: #28a745;
    --sf-danger: #dc3545;
    --sf-warning: #f59e0b;
    --sf-radius-sm: 8px;
    --sf-radius: 12px;
    --sf-radius-lg: 20px;
    --sf-radius-pill: 50px;
    --sf-shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --sf-shadow: 0 4px 24px rgba(0,0,0,0.06);
    --sf-shadow-lg: 0 8px 40px rgba(0,0,0,0.08);
    --sf-shadow-xl: 0 12px 48px rgba(0,0,0,0.10);
    --sf-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Global Reset & Base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

body.sf-body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--sf-bg);
    color: var(--sf-navy);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ---------- Typography ---------- */
.sf-heading {
    font-weight: 700;
    color: var(--sf-navy);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.sf-subtext {
    color: var(--sf-gray-600);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* ---------- Card ---------- */
.sf-card {
    background: var(--sf-white);
    border-radius: var(--sf-radius-lg);
    box-shadow: var(--sf-shadow);
    border: 1px solid var(--sf-gray-200);
    transition: var(--sf-transition);
}

.sf-card:hover {
    box-shadow: var(--sf-shadow-lg);
}

.sf-card-flat {
    background: var(--sf-white);
    border-radius: var(--sf-radius-lg);
    border: 1px solid var(--sf-gray-200);
}

/* ---------- Buttons ---------- */
.sf-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--sf-radius-pill);
    border: none;
    cursor: pointer;
    transition: var(--sf-transition);
    text-decoration: none;
    letter-spacing: 0.01em;
}

.sf-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(79, 134, 247, 0.3);
}

.sf-btn-primary {
    background: var(--sf-primary);
    color: var(--sf-white);
    box-shadow: 0 4px 14px rgba(79, 134, 247, 0.35);
}

.sf-btn-primary:hover {
    background: var(--sf-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 134, 247, 0.4);
}

.sf-btn-primary:active {
    transform: translateY(0);
}

.sf-btn-outline {
    background: transparent;
    color: var(--sf-primary);
    border: 2px solid var(--sf-primary);
}

.sf-btn-outline:hover {
    background: var(--sf-primary);
    color: var(--sf-white);
    transform: translateY(-2px);
}

.sf-btn-ghost {
    background: transparent;
    color: var(--sf-gray-700);
    border: 1px solid var(--sf-gray-300);
}

.sf-btn-ghost:hover {
    background: var(--sf-gray-100);
    border-color: var(--sf-gray-400);
}

.sf-btn-danger {
    background: transparent;
    color: var(--sf-danger);
    border: 1px solid rgba(220, 53, 69, 0.3);
}

.sf-btn-danger:hover {
    background: rgba(220, 53, 69, 0.08);
    border-color: var(--sf-danger);
}

.sf-btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.8125rem;
}

.sf-btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1rem;
}

.sf-btn-block {
    width: 100%;
}

.sf-btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ---------- Form Inputs ---------- */
.sf-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    font-family: inherit;
    color: var(--sf-navy);
    background: var(--sf-gray-50);
    border: 1.5px solid var(--sf-gray-300);
    border-radius: var(--sf-radius);
    transition: var(--sf-transition);
    appearance: none;
}

.sf-input:focus {
    outline: none;
    border-color: var(--sf-primary);
    box-shadow: 0 0 0 3px rgba(79, 134, 247, 0.15);
    background: var(--sf-white);
}

.sf-input::placeholder {
    color: var(--sf-gray-500);
}

.sf-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--sf-navy);
    margin-bottom: 0.375rem;
}

.sf-select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    font-family: inherit;
    color: var(--sf-navy);
    background: var(--sf-gray-50);
    border: 1.5px solid var(--sf-gray-300);
    border-radius: var(--sf-radius);
    transition: var(--sf-transition);
    cursor: pointer;
}

.sf-select:focus {
    outline: none;
    border-color: var(--sf-primary);
    box-shadow: 0 0 0 3px rgba(79, 134, 247, 0.15);
    background: var(--sf-white);
}

textarea.sf-input {
    resize: vertical;
    min-height: 140px;
}

/* ---------- Toggle Switch ---------- */
.sf-toggle {
    position: relative;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
}

.sf-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.sf-toggle-track {
    position: absolute;
    inset: 0;
    background: var(--sf-gray-300);
    border-radius: 12px;
    transition: var(--sf-transition);
    cursor: pointer;
}

.sf-toggle-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: var(--sf-white);
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
    transition: var(--sf-transition);
}

.sf-toggle input:checked ~ .sf-toggle-track {
    background: var(--sf-primary);
}

.sf-toggle input:checked ~ .sf-toggle-thumb {
    transform: translateX(20px);
}

/* ---------- Auth Page Layout ---------- */
.sf-auth-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    background: var(--sf-bg);
    position: relative;
    overflow: hidden;
}

/* Decorative blobs */
.sf-auth-wrapper::before,
.sf-auth-wrapper::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.35;
    pointer-events: none;
    z-index: 0;
}

.sf-auth-wrapper::before {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #4f86f7, #a78bfa);
    top: -120px;
    right: -100px;
}

.sf-auth-wrapper::after {
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, #38bdf8, #4f86f7);
    bottom: -100px;
    left: -80px;
}

.sf-auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--sf-white);
    border-radius: var(--sf-radius-lg);
    box-shadow: var(--sf-shadow-xl);
    padding: 2.5rem;
    position: relative;
    z-index: 1;
    border: 1px solid rgba(0,0,0,0.04);
}

.sf-auth-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.sf-auth-logo h1 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--sf-navy);
    letter-spacing: -0.03em;
}

.sf-auth-logo h1 span {
    color: var(--sf-primary);
}

.sf-auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--sf-navy);
    text-align: center;
    margin-bottom: 0.5rem;
}

.sf-auth-subtitle {
    color: var(--sf-gray-600);
    text-align: center;
    font-size: 0.9375rem;
    margin-bottom: 1.75rem;
}

/* ---------- Sidebar Layout ---------- */
.sf-layout {
    display: flex;
    min-height: 100vh;
}

.sf-sidebar {
    width: 260px;
    background: var(--sf-white);
    border-right: 1px solid var(--sf-gray-200);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
}

.sf-sidebar-brand {
    padding: 1.5rem 1.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sf-sidebar-brand a {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--sf-navy);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.sf-sidebar-brand a span {
    color: var(--sf-primary);
}

.sf-sidebar-nav {
    flex: 1;
    padding: 0.5rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sf-sidebar-section {
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
    padding: 0 0.75rem;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--sf-gray-500);
}

.sf-sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--sf-gray-700);
    text-decoration: none;
    border-radius: var(--sf-radius-sm);
    transition: var(--sf-transition);
}

.sf-sidebar-link:hover {
    background: var(--sf-primary-subtle);
    color: var(--sf-primary);
}

.sf-sidebar-link.active {
    background: var(--sf-primary-subtle);
    color: var(--sf-primary);
    font-weight: 600;
}

.sf-sidebar-link svg,
.sf-sidebar-link .sf-sidebar-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    opacity: 0.7;
}

.sf-sidebar-link.active svg,
.sf-sidebar-link.active .sf-sidebar-icon {
    opacity: 1;
}

.sf-sidebar-footer {
    padding: 1rem 0.75rem;
    border-top: 1px solid var(--sf-gray-200);
    margin-top: auto;
}

.sf-sidebar-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--sf-radius-sm);
    text-decoration: none;
    transition: var(--sf-transition);
}

.sf-sidebar-user:hover {
    background: var(--sf-gray-100);
}

.sf-sidebar-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--sf-primary);
    color: var(--sf-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8125rem;
    font-weight: 700;
    flex-shrink: 0;
}

.sf-sidebar-user-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--sf-navy);
    line-height: 1.2;
}

.sf-sidebar-user-email {
    font-size: 0.75rem;
    color: var(--sf-gray-500);
}

.sf-sidebar-user-info {
    flex: 1;
    min-width: 0;
}

.sf-sidebar-user-info .sf-sidebar-user-name,
.sf-sidebar-user-info .sf-sidebar-user-email {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Main content area */
.sf-main {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
    background: var(--sf-bg);
}

/* Mobile sidebar */
.sf-mobile-header {
    display: none;
    position: sticky;
    top: 0;
    z-index: 90;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--sf-gray-200);
    padding: 0.75rem 1rem;
    align-items: center;
    justify-content: space-between;
}

.sf-mobile-burger {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--sf-gray-700);
    border-radius: var(--sf-radius-sm);
    transition: var(--sf-transition);
}

.sf-mobile-burger:hover {
    background: var(--sf-gray-100);
}

.sf-sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 99;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sf-sidebar-overlay.active {
    display: block;
    opacity: 1;
}

@media (max-width: 768px) {
    .sf-sidebar {
        transform: translateX(-100%);
    }

    .sf-sidebar.open {
        transform: translateX(0);
    }

    .sf-main {
        margin-left: 0;
    }

    .sf-mobile-header {
        display: flex;
    }
}

/* Keep old nav classes for guest/landing pages */
.sf-nav {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--sf-gray-200);
    position: sticky;
    top: 0;
    z-index: 50;
}

.sf-nav-brand {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--sf-navy);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.sf-nav-brand span {
    color: var(--sf-primary);
}

.sf-nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--sf-gray-700);
    text-decoration: none;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: var(--sf-transition);
}

.sf-nav-link:hover {
    color: var(--sf-primary);
}

.sf-nav-link.active {
    color: var(--sf-primary);
    border-bottom-color: var(--sf-primary);
}

/* ---------- Page Header ---------- */
.sf-page-header {
    background: var(--sf-white);
    border-bottom: 1px solid var(--sf-gray-200);
    padding: 1.5rem 0;
}

.sf-page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--sf-navy);
}

/* ---------- Stats Card ---------- */
.sf-stat-card {
    background: var(--sf-white);
    border-radius: var(--sf-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--sf-shadow);
    border: 1px solid var(--sf-gray-200);
    position: relative;
    overflow: hidden;
    transition: var(--sf-transition);
}

.sf-stat-card:hover {
    box-shadow: var(--sf-shadow-lg);
    transform: translateY(-2px);
}

.sf-stat-card .sf-stat-icon {
    position: absolute;
    top: 1rem;
    right: 1rem;
    opacity: 0.08;
}

.sf-stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sf-gray-600);
    margin-bottom: 0.5rem;
}

.sf-stat-value {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--sf-navy);
    line-height: 1.1;
}

.sf-stat-unit {
    font-size: 0.875rem;
    color: var(--sf-gray-500);
    font-weight: 500;
    margin-left: 0.25rem;
}

/* ---------- Progress Bar ---------- */
.sf-progress {
    width: 100%;
    height: 8px;
    background: var(--sf-gray-200);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 1rem;
}

.sf-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--sf-primary), var(--sf-primary-light));
    border-radius: 4px;
    transition: width 0.6s ease;
}

/* ---------- Table ---------- */
.sf-table-wrapper {
    background: var(--sf-white);
    border-radius: var(--sf-radius-lg);
    box-shadow: var(--sf-shadow);
    border: 1px solid var(--sf-gray-200);
    overflow: hidden;
}

.sf-table-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--sf-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--sf-gray-50);
}

.sf-table {
    width: 100%;
    text-align: left;
    border-collapse: collapse;
}

.sf-table thead {
    background: var(--sf-gray-50);
}

.sf-table th {
    padding: 0.875rem 1.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sf-gray-600);
    border-bottom: 1px solid var(--sf-gray-200);
}

.sf-table td {
    padding: 0.875rem 1.5rem;
    font-size: 0.875rem;
    color: var(--sf-gray-700);
    border-bottom: 1px solid var(--sf-gray-100);
}

.sf-table tbody tr:hover {
    background: var(--sf-primary-subtle);
}

.sf-table tbody tr:last-child td {
    border-bottom: none;
}

/* ---------- Badge ---------- */
.sf-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--sf-radius-pill);
}

.sf-badge-primary {
    background: rgba(79, 134, 247, 0.1);
    color: var(--sf-primary);
    border: 1px solid rgba(79, 134, 247, 0.2);
}

.sf-badge-success {
    background: rgba(40, 167, 69, 0.1);
    color: var(--sf-success);
    border: 1px solid rgba(40, 167, 69, 0.2);
}

.sf-badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--sf-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.sf-badge-active {
    background: rgba(40, 167, 69, 0.1);
    color: var(--sf-success);
    border: 1px solid rgba(40, 167, 69, 0.2);
}

/* ---------- Pricing Card ---------- */
.sf-pricing-card {
    background: var(--sf-white);
    border-radius: var(--sf-radius-lg);
    padding: 2rem;
    box-shadow: var(--sf-shadow);
    border: 1px solid var(--sf-gray-200);
    display: flex;
    flex-direction: column;
    transition: var(--sf-transition);
    position: relative;
}

.sf-pricing-card:hover {
    box-shadow: var(--sf-shadow-lg);
    transform: translateY(-4px);
}

.sf-pricing-card.sf-pricing-highlight {
    border-color: var(--sf-primary);
    box-shadow: var(--sf-shadow-lg), 0 0 0 1px var(--sf-primary);
}

.sf-pricing-popular {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--sf-primary);
    color: var(--sf-white);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 1.25rem;
    border-radius: var(--sf-radius-pill);
    box-shadow: 0 4px 12px rgba(79, 134, 247, 0.3);
}

.sf-pricing-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--sf-navy);
    margin-bottom: 0.25rem;
}

.sf-pricing-price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--sf-navy);
}

.sf-pricing-period {
    font-size: 0.875rem;
    color: var(--sf-gray-500);
}

.sf-pricing-features {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
    flex-grow: 1;
}

.sf-pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--sf-gray-700);
    padding: 0.375rem 0;
}

.sf-pricing-features li svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--sf-primary);
}

/* ---------- Alerts / Flash ---------- */
.sf-alert {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    border-radius: var(--sf-radius);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.sf-alert-success {
    background: rgba(40, 167, 69, 0.08);
    color: #1a7431;
    border: 1px solid rgba(40, 167, 69, 0.2);
}

.sf-alert-error {
    background: rgba(220, 53, 69, 0.08);
    color: #a11d2b;
    border: 1px solid rgba(220, 53, 69, 0.2);
}

.sf-alert-info {
    background: rgba(79, 134, 247, 0.08);
    color: var(--sf-primary-dark);
    border: 1px solid rgba(79, 134, 247, 0.2);
}

.sf-alert svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* ---------- Checkbox ---------- */
.sf-checkbox {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    border: 2px solid var(--sf-gray-400);
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    transition: var(--sf-transition);
    position: relative;
}

.sf-checkbox:checked {
    background: var(--sf-primary);
    border-color: var(--sf-primary);
}

.sf-checkbox:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 11px;
    font-weight: 700;
}

.sf-checkbox:focus {
    box-shadow: 0 0 0 3px rgba(79, 134, 247, 0.2);
}

/* ---------- Landing Page ---------- */
.sf-hero {
    padding: 6rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: var(--sf-white);
}

.sf-hero::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(79, 134, 247, 0.12), transparent 70%);
    top: -150px;
    right: -100px;
    pointer-events: none;
}

.sf-hero::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(167, 139, 250, 0.1), transparent 70%);
    bottom: -100px;
    left: -100px;
    pointer-events: none;
}

.sf-hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: var(--sf-navy);
    letter-spacing: -0.03em;
    line-height: 1.15;
    max-width: 700px;
    margin: 0 auto 1.25rem;
}

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

.sf-hero-subtitle {
    font-size: 1.125rem;
    color: var(--sf-gray-600);
    max-width: 600px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

.sf-hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.sf-features {
    padding: 5rem 2rem;
    background: var(--sf-bg);
}

.sf-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

.sf-feature-card {
    background: var(--sf-white);
    border-radius: var(--sf-radius-lg);
    padding: 2rem;
    box-shadow: var(--sf-shadow-sm);
    border: 1px solid var(--sf-gray-200);
    transition: var(--sf-transition);
}

.sf-feature-card:hover {
    box-shadow: var(--sf-shadow);
    transform: translateY(-4px);
}

.sf-feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--sf-radius);
    background: var(--sf-primary-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    color: var(--sf-primary);
}

.sf-feature-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--sf-navy);
    margin-bottom: 0.5rem;
}

.sf-feature-desc {
    font-size: 0.875rem;
    color: var(--sf-gray-600);
    line-height: 1.6;
}

/* ---------- CTA Section ---------- */
.sf-cta {
    padding: 5rem 2rem;
    text-align: center;
    background: var(--sf-navy);
    color: var(--sf-white);
    position: relative;
    overflow: hidden;
}

.sf-cta::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(79, 134, 247, 0.2), transparent 70%);
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    pointer-events: none;
}

.sf-cta-title {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
}

.sf-cta-text {
    color: rgba(255,255,255,0.7);
    max-width: 550px;
    margin: 0 auto 2rem;
    position: relative;
}

/* ---------- Footer ---------- */
.sf-footer {
    background: var(--sf-navy);
    color: rgba(255,255,255,0.5);
    padding: 2rem;
    text-align: center;
    font-size: 0.875rem;
}

/* ---------- Output Panel ---------- */
.sf-output-panel {
    background: var(--sf-gray-50);
    border: 1px solid var(--sf-gray-200);
    border-radius: var(--sf-radius);
    padding: 1.25rem;
    min-height: 300px;
    position: relative;
}

.sf-output-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 280px;
    color: var(--sf-gray-400);
    text-align: center;
    gap: 1rem;
}

/* ---------- Section Title ---------- */
.sf-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--sf-primary);
    margin-bottom: 0.5rem;
}

/* ---------- Notes Box ---------- */
.sf-notes {
    background: var(--sf-gray-50);
    border: 1px solid var(--sf-gray-200);
    border-radius: var(--sf-radius-lg);
    padding: 1.5rem;
    font-size: 0.875rem;
    color: var(--sf-gray-700);
}

.sf-notes strong {
    color: var(--sf-navy);
}

/* ---------- Dropdown ---------- */
.sf-dropdown {
    background: var(--sf-white);
    border: 1px solid var(--sf-gray-200);
    border-radius: var(--sf-radius);
    box-shadow: var(--sf-shadow-lg);
    padding: 0.5rem 0;
    min-width: 180px;
}

.sf-dropdown-item {
    display: block;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    color: var(--sf-gray-700);
    text-decoration: none;
    transition: var(--sf-transition);
}

.sf-dropdown-item:hover {
    background: var(--sf-primary-subtle);
    color: var(--sf-primary);
}

/* ---------- Utility ---------- */
.sf-text-primary { color: var(--sf-primary); }
.sf-text-navy { color: var(--sf-navy); }
.sf-text-muted { color: var(--sf-gray-600); }
.sf-text-success { color: var(--sf-success); }
.sf-text-danger { color: var(--sf-danger); }
.sf-bg-primary-subtle { background: var(--sf-primary-subtle); }
.sf-link {
    color: var(--sf-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--sf-transition);
}
.sf-link:hover {
    color: var(--sf-primary-dark);
    text-decoration: underline;
}

/* ---------- Animations ---------- */
@keyframes sf-fade-in {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes sf-pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

.sf-animate-in {
    animation: sf-fade-in 0.5s ease-out;
}

.sf-animate-pulse {
    animation: sf-pulse 1.5s ease-in-out infinite;
}

/* ---------- Loading dots ---------- */
.sf-loading-dots {
    display: flex;
    gap: 6px;
    align-items: center;
    justify-content: center;
}

.sf-loading-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--sf-primary);
    animation: sf-pulse 1.4s ease-in-out infinite;
}

.sf-loading-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.sf-loading-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

/* ---------- Spinner ---------- */
.sf-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid var(--sf-gray-300);
    border-top-color: var(--sf-primary);
    border-radius: 50%;
    animation: sf-spin 0.7s linear infinite;
}

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