/* ==========================================================================
   Peoples Post - Rate Comparator Styles
   ========================================================================== */

:root {
    /* Couleurs Peoples Post */
    --color-primary: #3026f0;
    --color-primary-dark: #2418c7;
    --color-primary-light: #4353ff;
    --color-secondary: #ed6932;

    /* Neutres */
    --color-white: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;

    /* États */
    --color-success: #22c55e;
    --color-success-light: #dcfce7;
    --color-error: #ef4444;
    --color-error-light: #fee2e2;
    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;

    /* Typographie */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Espacements */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* Bordures */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Ombres */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    margin: 0;
    font-family: var(--font-body);
    background: var(--color-gray-50);
    color: var(--color-gray-800);
    line-height: 1.5;
}

/* ==========================================================================
   Toast notification (global)
   ========================================================================== */

.toast {
    position: fixed;
    top: 70px;
    right: var(--spacing-lg);
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    z-index: 200;
    box-shadow: var(--shadow-lg);
    transition: opacity 0.3s, transform 0.3s;
}
.toast.hidden { opacity: 0; transform: translateY(-10px); pointer-events: none; }
.toast.success { background: var(--color-success-light); color: #166534; border: 1px solid var(--color-success); }
.toast.error { background: var(--color-error-light); color: #991b1b; border: 1px solid var(--color-error); }
.toast.info { background: #eff6ff; color: #1e40af; border: 1px solid #93c5fd; }

/* ==========================================================================
   Header
   ========================================================================== */

.header {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-logo {
    height: 58px;
    width: auto;
}

.header h1 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
}

.header-subtitle {
    font-size: 0.8rem;
    opacity: 1;
    color: var(--color-secondary);
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-800);
    margin: 0 0 var(--spacing-md) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

/* ==========================================================================
   Form elements
   ========================================================================== */

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-gray-600);
}

.form-group input,
.form-group select {
    padding: 10px 12px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-family: var(--font-body);
    color: var(--color-gray-800);
    background: var(--color-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(48, 38, 240, 0.1);
}

.form-group input::placeholder {
    color: var(--color-gray-400);
}

/* Inline validation */
.form-group input.invalid, .form-group select.invalid {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}
.field-error {
    font-size: 0.75rem;
    color: var(--color-error);
    margin-top: 2px;
}
.required {
    color: var(--color-error);
    font-weight: 700;
    margin-left: 2px;
}

.vol-weight-display {
    font-size: 0.8125rem;
    color: var(--color-gray-500);
    padding: var(--spacing-xs) 0;
}

.vol-weight-display .highlight {
    color: var(--color-primary);
    font-weight: 600;
}

/* ==========================================================================
   Stepper visual
   ========================================================================== */

.stepper { display: flex; align-items: center; gap: var(--spacing-sm); padding: var(--spacing-md) 0; margin-bottom: var(--spacing-md); }
.stepper-step { display: flex; align-items: center; gap: 6px; font-size: 0.8125rem; font-weight: 500; color: var(--color-gray-400); }
.stepper-step.done { color: var(--color-success); }
.stepper-step.done .stepper-icon { background: var(--color-success); color: white; }
.stepper-step.active { color: var(--color-primary); }
.stepper-icon { width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 700; border: 2px solid currentColor; flex-shrink: 0; }
.stepper-sep { width: 24px; height: 2px; background: var(--color-gray-200); flex-shrink: 0; }

/* ==========================================================================
   Methods checklist (destination-driven)
   ========================================================================== */

.methods-checklist {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.method-item {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    background: var(--color-gray-50);
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

.method-item:hover {
    border-color: var(--color-gray-300);
    background: var(--color-white);
}

.method-check-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: 0.9375rem;
    padding: var(--spacing-xs) 0;
}

.method-check-label input[type="checkbox"] {
    accent-color: var(--color-primary);
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.method-carrier {
    font-weight: 600;
    color: var(--color-gray-800);
}

.method-separator {
    color: var(--color-gray-400);
}

.method-service {
    color: var(--color-gray-600);
}

.methods-counter {
    margin-left: auto;
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 2px 10px;
    border-radius: 999px;
}

.counter-warning {
    color: var(--color-warning);
    background: var(--color-warning-light);
}

.counter-ok {
    color: var(--color-success);
    background: var(--color-success-light);
}

.no-methods {
    text-align: center;
    color: var(--color-gray-400);
    padding: var(--spacing-lg);
    font-style: italic;
}

/* Options toggle & panel */
.btn-toggle-options {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-primary);
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 4px 0;
    margin-top: var(--spacing-xs);
    font-family: var(--font-body);
}

.btn-toggle-options:hover {
    text-decoration: underline;
}

.method-options-panel {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0 var(--spacing-xs) 26px;
}

.option-label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.8125rem;
    color: var(--color-gray-600);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-fast);
}

.option-label:hover {
    border-color: var(--color-primary-light);
    background: rgba(48, 38, 240, 0.04);
}

.option-label input[type="checkbox"] {
    accent-color: var(--color-primary);
}

.option-detail {
    color: var(--color-gray-400);
    font-size: 0.75rem;
}

/* ==========================================================================
   ODA/OPA Postal Code Lookup
   ========================================================================== */

.oda-opa-lookup {
    padding: var(--spacing-sm) 0;
    margin-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-gray-200);
}

.oda-opa-input-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.oda-opa-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-gray-600);
    white-space: nowrap;
}

.oda-opa-input {
    padding: 6px 10px;
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-family: var(--font-body);
    color: var(--color-gray-800);
    background: var(--color-white);
    width: 140px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.oda-opa-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(48, 38, 240, 0.1);
}

.oda-opa-input::placeholder {
    color: var(--color-gray-400);
}

.btn-oda-opa-check {
    padding: 6px 12px;
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    color: var(--color-primary);
    font-size: 0.8125rem;
    font-weight: 600;
    font-family: var(--font-body);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-oda-opa-check:hover {
    background: rgba(48, 38, 240, 0.04);
}

.oda-opa-result {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xs);
    min-height: 0;
}

.oda-opa-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
    white-space: nowrap;
}

.oda-opa-badge.badge-no {
    color: #166534;
    background: var(--color-success-light);
}

.oda-opa-badge.badge-tier {
    color: #92400e;
    background: var(--color-warning-light);
}

.oda-opa-loading {
    font-size: 0.75rem;
    color: var(--color-gray-400);
    font-style: italic;
}

.oda-opa-error {
    font-size: 0.75rem;
    color: var(--color-error);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn-row {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    margin-top: var(--spacing-md);
}

.btn {
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

.btn-primary:disabled {
    background: var(--color-gray-300);
    cursor: not-allowed;
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-secondary:hover {
    background: rgba(48, 38, 240, 0.04);
}

.btn-secondary:disabled {
    border-color: var(--color-gray-300);
    color: var(--color-gray-400);
    cursor: not-allowed;
}

/* Button loading spinner */
.btn-spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.3); border-top-color: white; border-radius: 50%; animation: spin 0.6s linear infinite; }

/* Export button */
.btn-export { background: var(--color-white); color: var(--color-secondary); border: 1px solid var(--color-secondary); padding: 10px 20px; border-radius: var(--radius-sm); font-family: var(--font-body); font-size: 0.9375rem; font-weight: 600; cursor: pointer; display: inline-flex; align-items: center; gap: var(--spacing-sm); transition: all var(--transition-fast); }
.btn-export:hover { background: rgba(237, 105, 50, 0.06); box-shadow: var(--shadow-sm); }

/* ==========================================================================
   Preset chips
   ========================================================================== */

.preset-bar { display: flex; flex-wrap: wrap; align-items: center; gap: var(--spacing-sm); margin-bottom: var(--spacing-md); }
.preset-label { font-size: 0.8125rem; font-weight: 600; color: var(--color-gray-600); }
.preset-chip { background: var(--color-white); color: var(--color-secondary); border: 1.5px solid var(--color-secondary); padding: 6px 14px; border-radius: 999px; font-family: var(--font-body); font-size: 0.8125rem; font-weight: 600; cursor: pointer; transition: all var(--transition-fast); }
.preset-chip:hover { background: var(--color-secondary); color: white; }

/* ==========================================================================
   Results table
   ========================================================================== */

.results-section {
    display: none;
}

.results-section.visible {
    display: block;
}

.results-grid {
    display: grid;
    gap: var(--spacing-md);
}

.result-card {
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.result-card.cheapest {
    border-color: var(--color-success);
    box-shadow: 0 0 0 1px var(--color-success), var(--shadow-md);
}

.result-card.has-error {
    border-color: var(--color-error);
    opacity: 0.7;
}

.result-header {
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--color-gray-50);
    border-bottom: 1px solid var(--color-gray-200);
}

.result-card.cheapest .result-header {
    background: var(--color-success-light);
}

.result-carrier {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
}

.result-service {
    font-size: 0.8125rem;
    color: var(--color-gray-500);
}

.result-total {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-gray-800);
}

.result-card.cheapest .result-total {
    color: var(--color-success);
}

.cheapest-badge {
    display: none;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-success);
    background: var(--color-success-light);
    padding: 2px 8px;
    border-radius: 999px;
    letter-spacing: 0.05em;
}

.result-card.cheapest .cheapest-badge {
    display: inline-block;
}

.result-breakdown {
    padding: var(--spacing-md) var(--spacing-lg);
}

.breakdown-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--color-gray-100);
}

.breakdown-row:last-child {
    border-bottom: none;
}

.breakdown-row.total-row {
    font-weight: 700;
    font-size: 1rem;
    border-top: 2px solid var(--color-gray-200);
    margin-top: var(--spacing-xs);
    padding-top: var(--spacing-sm);
    border-bottom: none;
}

.breakdown-label {
    color: var(--color-gray-600);
}

.breakdown-value {
    font-weight: 600;
    color: var(--color-gray-800);
}

.result-error {
    padding: var(--spacing-lg);
    color: var(--color-error);
    text-align: center;
    font-weight: 500;
}

.weight-info {
    font-size: 0.8125rem;
    color: var(--color-gray-500);
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.weight-info strong {
    color: var(--color-gray-700);
}

/* ==========================================================================
   Loading state
   ========================================================================== */

.loading {
    display: none;
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-gray-500);
}

.loading.visible {
    display: block;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto var(--spacing-md);
}

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

/* ==========================================================================
   Zone badges & postal code
   ========================================================================== */

.label-optional {
    font-weight: 400;
    color: var(--color-gray-400);
    text-transform: none;
    letter-spacing: 0;
}

.zone-badges-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.zone-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
    white-space: nowrap;
}

.zone-badge-zone {
    color: #1e40af;
    background: #dbeafe;
    border: 1px solid #93c5fd;
}

.zone-badge-warning {
    color: #92400e;
    background: var(--color-warning-light);
    border: 1px solid var(--color-warning);
}

.zone-badge-tier {
    color: #92400e;
    background: var(--color-warning-light);
    border: 1px solid #fbbf24;
}

.zone-badge-error {
    color: #991b1b;
    background: var(--color-error-light);
    border: 1px solid var(--color-error);
}

/* --- Method unavailable (coverage) --- */

.method-item.method-unavailable {
    opacity: 0.5;
    pointer-events: none;
    position: relative;
}

.method-item.method-unavailable .method-cb {
    pointer-events: auto;
}

.coverage-warning {
    display: block;
    font-size: 0.75rem;
    color: var(--color-error);
    padding: 2px 0 2px 26px;
    font-weight: 500;
}

/* --- Auto-selected supplement --- */

.option-label.option-auto {
    background: #dbeafe;
    border-color: #93c5fd;
    color: #1e40af;
}

.option-label.option-auto input[type="checkbox"] {
    accent-color: #1e40af;
}

.auto-badge {
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #1e40af;
    background: rgba(30, 64, 175, 0.1);
    padding: 1px 5px;
    border-radius: 3px;
    margin-left: 2px;
}

/* ==========================================================================
   Chart container
   ========================================================================== */

.chart-container {
    position: relative;
    width: 100%;
    height: 300px;
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-gray-200);
}

.chart-container canvas {
    width: 100% !important;
}

/* ==========================================================================
   Header navigation
   ========================================================================== */

.header-nav {
    display: flex;
    gap: var(--spacing-sm);
    margin-left: auto;
}

.header-nav .header-link {
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 6px 14px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.header-nav .header-link:hover,
.header-nav .header-link.active {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
    color: #fff;
}

/* ==========================================================================
   User dropdown
   ========================================================================== */

.user-dropdown {
    position: relative;
}

.header-link-user {
    background: none;
    cursor: pointer;
    font-family: inherit;
}

.user-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 180px;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    z-index: 1000;
}

.user-dropdown.open .user-dropdown-menu {
    display: block;
}

.user-dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: #1a1a2e;
    text-decoration: none;
    transition: background var(--transition-fast);
}

.user-dropdown-item:hover {
    background: #f5f5f7;
}

.user-dropdown-item svg {
    flex-shrink: 0;
    color: #666;
}

.user-dropdown-logout {
    border-top: 1px solid var(--border-color);
    color: var(--color-danger, #dc3545);
}

.user-dropdown-logout svg {
    color: var(--color-danger, #dc3545);
}

/* ==========================================================================
   Hamburger menu
   ========================================================================== */

.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 8px; margin-left: auto; }
.hamburger span { display: block; width: 22px; height: 2px; background: white; margin: 5px 0; border-radius: 2px; transition: all 0.3s; }
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   Empty states
   ========================================================================== */

.empty-state { text-align: center; padding: var(--spacing-2xl) var(--spacing-lg); color: var(--color-gray-400); }
.empty-state-icon { font-size: 2.5rem; margin-bottom: var(--spacing-md); opacity: 0.5; }
.empty-state-title { font-family: var(--font-heading); font-size: 1rem; font-weight: 600; color: var(--color-gray-600); margin-bottom: var(--spacing-xs); }
.empty-state-hint { font-size: 0.875rem; }

/* ==========================================================================
   Table scroll indicators
   ========================================================================== */

.table-scroll-wrap { position: relative; }
.table-scroll-wrap::after { content: ''; position: absolute; top: 0; right: 0; bottom: 0; width: 40px; background: linear-gradient(to right, transparent, rgba(255,255,255,0.9)); pointer-events: none; opacity: 1; transition: opacity 0.3s; }
.table-scroll-wrap.scrolled-end::after { opacity: 0; }

/* ==========================================================================
   Session history panel
   ========================================================================== */

.session-history-panel { margin-top: var(--spacing-lg); }
.session-history-toggle { background: none; border: 1px solid var(--color-gray-200); border-radius: var(--radius-md); padding: var(--spacing-sm) var(--spacing-md); font-family: var(--font-body); font-size: 0.8125rem; font-weight: 600; color: var(--color-gray-600); cursor: pointer; width: 100%; text-align: left; transition: all var(--transition-fast); }
.session-history-toggle:hover { border-color: var(--color-gray-300); background: var(--color-gray-50); }
.session-history-list { margin-top: var(--spacing-sm); display: flex; flex-direction: column; gap: 4px; }
.session-history-item { display: flex; gap: var(--spacing-md); padding: var(--spacing-sm) var(--spacing-md); background: var(--color-white); border: 1px solid var(--color-gray-200); border-radius: var(--radius-sm); cursor: pointer; font-size: 0.8125rem; transition: all var(--transition-fast); }
.session-history-item:hover { border-color: var(--color-primary-light); background: rgba(48, 38, 240, 0.02); }
.sh-dest { font-weight: 600; color: var(--color-gray-700); }
.sh-weight { color: var(--color-gray-500); }
.sh-best { font-weight: 700; color: var(--color-primary); }
.sh-carrier { color: var(--color-gray-400); margin-left: auto; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
    .hamburger { display: block; }
    .header-nav { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--color-primary); padding: var(--spacing-md); gap: var(--spacing-xs); box-shadow: var(--shadow-lg); }
    .header-nav.open { display: flex; }
    .header-nav .header-link { text-align: center; padding: 10px; border-radius: var(--radius-sm); }

    .header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .header h1 {
        font-size: 1rem;
    }

    .header-subtitle {
        display: none;
    }

    .container {
        padding: var(--spacing-md);
    }

    .form-row {
        grid-template-columns: 1fr 1fr;
    }

    .method-options-panel {
        padding-left: var(--spacing-sm);
    }

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

    .header-nav .header-link {
        font-size: 0.6875rem;
        padding: 4px 8px;
    }
}

/* ---------- Modal (global) ---------- */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-box {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
    max-width: 440px;
    width: 90%;
    animation: slideUp 0.2s;
}

@keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-sm);
}

.modal-body {
    font-size: 0.9375rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
}

.modal-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* ---------- Login error (global) ---------- */

.login-error {
    background: var(--color-error-light);
    color: var(--color-error);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
}