@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Manrope:wght@700;800&display=swap');

/* =========================================
   COTIZAYA PLATFORM STYLESHEET
   Milestone 1: Auth gate + platform shell
   ========================================= */

:root {
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-soft: #dbeafe;
    --color-secondary: #0f2742;
    --color-secondary-soft: #d9e2ec;
    --color-accent-yellow: #2dd4bf;
    --color-accent-red: #dc2626;
    --color-accent-green: #16a34a;
    --color-bg: #f8fafc;
    --color-surface: #ffffff;
    --color-surface-alt: #f1f5f9;
    --color-text: #102033;
    --color-text-soft: #64748b;
    --color-border: #d9e2ec;
    --color-shadow: rgba(15, 39, 66, 0.12);
    --color-overlay: rgba(15, 39, 66, 0.7);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 8px rgba(15, 39, 66, 0.06);
    --shadow-md: 0 8px 24px rgba(15, 39, 66, 0.08);
    --shadow-lg: 0 18px 50px rgba(15, 39, 66, 0.16);
    --transition-fast: 0.18s ease;
    --transition-normal: 0.28s ease;
    --max-width: 1200px;
}

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

[hidden] {
    display: none !important;
}

body {
    min-height: 100vh;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(34, 211, 238, 0.2), transparent 28rem),
        radial-gradient(circle at bottom right, rgba(37, 99, 235, 0.12), transparent 26rem),
        linear-gradient(180deg, #ffffff 0%, var(--color-bg) 100%);
    color: var(--color-text);
    line-height: 1.5;
}

.auth-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.5rem;
}

.auth-card {
    width: min(100%, 960px);
    display: grid;
    gap: 1.5rem;
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
    padding: 1.6rem;
    border: 1px solid rgba(217, 226, 236, 0.95);
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.88);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(14px);
}

.brand-lockup {
    padding: 1.2rem;
    border-radius: 24px;
    background:
        radial-gradient(circle at top left, rgba(34, 211, 238, 0.18), transparent 12rem),
        linear-gradient(135deg, rgba(37, 99, 235, 0.96), rgba(34, 211, 238, 0.88));
    color: #ffffff;
}

.brand-logo-wrap {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand-logo-image {
    width: 82px;
    height: 82px;
    border-radius: 22px;
    box-shadow: 0 14px 28px rgba(15, 39, 66, 0.24);
}

.auth-eyebrow {
    margin-bottom: 0.3rem;
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.82);
}

.brand-lockup h1,
.auth-blocked h2 {
    font-family: Manrope, Inter, system-ui, sans-serif;
    letter-spacing: -0.04em;
}

.brand-lockup h1 {
    margin: 0;
    font-size: clamp(2rem, 4vw, 3.6rem);
    line-height: 0.95;
    color: #ffffff;
}

.auth-intro {
    max-width: 36rem;
    margin-top: 1.4rem;
    color: rgba(255, 255, 255, 0.88);
    font-size: 1rem;
}

.auth-status-card,
.auth-panel {
    border: 1px solid rgba(217, 226, 236, 0.92);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: var(--shadow-md);
}

.auth-status-card {
    padding: 1.4rem;
}

.auth-status-title {
    margin: 0;
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--color-secondary);
}

.auth-status-detail {
    margin-top: 0.55rem;
    color: var(--color-text-soft);
}

.auth-panel {
    padding: 1.4rem;
}

.auth-google-btn,
.auth-password-btn {
    width: 100%;
}

.auth-divider {
    position: relative;
    margin: 1.2rem 0;
    text-align: center;
    color: var(--color-text-soft);
}

.auth-divider::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--color-border);
}

.auth-divider span {
    position: relative;
    display: inline-block;
    padding: 0 0.8rem;
    background: #ffffff;
}

.auth-form {
    display: grid;
    gap: 1rem;
}

.auth-field label {
    display: block;
}

.auth-feedback {
    min-height: 1.25rem;
    margin: 0;
    font-size: 0.92rem;
}

.auth-feedback[data-tone="error"] {
    color: var(--color-accent-red);
}

.auth-feedback[data-tone="neutral"] {
    color: var(--color-text-soft);
}

.auth-blocked p {
    margin-bottom: 0.8rem;
}

.auth-blocked-email-label {
    margin-top: 1rem;
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-soft);
}

.auth-blocked-email {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.auth-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.2rem;
}

.container {
    width: min(100% - 1.5rem, var(--max-width));
    margin: 0 auto;
    padding: 1.1rem 0 2rem;
}

.header {
    position: sticky;
    top: 0.85rem;
    z-index: 100;
    min-height: 84px;
    padding: 1.1rem 1.35rem;
    border: 1px solid rgba(216, 225, 239, 0.78);
    border-radius: var(--radius-xl);
    background:
        linear-gradient(135deg, rgba(15, 39, 66, 0.98), rgba(37, 99, 235, 0.92)),
        linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.header::before,
.header::after {
    content: "";
    position: absolute;
    border-radius: 999px;
    opacity: 0.18;
    pointer-events: none;
}

.header::before {
    width: 240px;
    height: 240px;
    top: -130px;
    right: -70px;
    background: rgba(45, 212, 191, 0.62);
}

.header::after {
    width: 170px;
    height: 170px;
    left: -55px;
    bottom: -95px;
    background: #ffffff;
}

.header h1 {
    position: relative;
    z-index: 1;
    max-width: 820px;
    margin: 0;
    font-family: Manrope, Inter, system-ui, sans-serif;
    font-size: clamp(1.35rem, 2.5vw, 2.4rem);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.04em;
}

.header-copy,
.header-actions {
    position: relative;
    z-index: 1;
}

.header-copy {
    display: grid;
    gap: 0.35rem;
}

.header-kicker {
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.72);
}

.header-subtitle {
    max-width: 44rem;
    font-size: 0.98rem;
    color: rgba(255, 255, 255, 0.82);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.session-badge {
    display: inline-flex;
    align-items: center;
    min-height: 42px;
    padding: 0.55rem 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    font-size: 0.88rem;
    font-weight: 700;
    white-space: nowrap;
}

.header-signout-btn {
    min-width: 132px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: #ffffff;
}

.header-signout-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.18);
}

.menu-btn {
    position: relative;
    z-index: 1;
    width: 50px;
    height: 50px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.12);
    color: white;
    font-size: 1.45rem;
    cursor: pointer;
    transition: transform var(--transition-fast), background var(--transition-fast);
    backdrop-filter: blur(12px);
}

.menu-btn:hover {
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.2);
}

.nav-menu {
    display: none;
    margin: 1rem 0 1.35rem;
    padding: 0.6rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.8);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(12px);
}

.nav-menu.active {
    display: block;
}

.nav-menu ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.nav-menu ul li {
    border: 0;
}

.nav-menu ul li a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0.75rem 1rem;
    border-radius: 999px;
    color: var(--color-secondary);
    text-decoration: none;
    font-weight: 700;
    background: transparent;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-menu ul li a:hover,
.nav-menu ul li a:focus-visible {
    color: white;
    background: linear-gradient(135deg, var(--color-primary), #347dff);
    box-shadow: 0 10px 24px rgba(17, 86, 200, 0.2);
    transform: translateY(-1px);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-section {
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, white 0%, #fbfdff 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 1.6rem;
    margin-bottom: 1.1rem;
    box-shadow: var(--shadow-md);
}

.form-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 140px;
    height: 4px;
    border-radius: 999px;
    background: linear-gradient(
        90deg,
        var(--color-primary) 0%,
        var(--color-primary) 38%,
        var(--color-accent-yellow) 38%,
        var(--color-accent-yellow) 60%,
        var(--color-accent-red) 60%,
        var(--color-accent-red) 78%,
        #444 78%,
        #444 100%
    );
}

.form-group {
    margin-bottom: 2rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group h2,
#history-tab h2,
#settings-tab h2 {
    margin-bottom: 1rem;
    color: var(--color-secondary);
    font-size: 1.35rem;
    font-weight: 800;
}

.form-group h3 {
    margin-bottom: 0.75rem;
    color: var(--color-text);
    font-size: 1.02rem;
    font-weight: 800;
}

.settings-helper {
    margin: -0.15rem 0 1rem;
    color: var(--color-text-soft);
    font-size: 0.94rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

#customerRif {
    text-transform: uppercase;
}

label {
    display: inline-block;
    margin-bottom: 0.45rem;
    font-weight: 700;
    color: var(--color-secondary);
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.88rem 0.95rem;
    font: inherit;
    color: var(--color-text);
    background: white;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(17, 86, 200, 0.1);
}

input:disabled {
    background: var(--color-surface-alt);
    color: var(--color-text-soft);
    cursor: not-allowed;
}

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

.items-container {
    display: grid;
    gap: 0.85rem;
    margin-bottom: 1rem;
}

.item-row {
    display: grid;
    grid-template-columns: 2.2fr 1fr 1fr auto;
    gap: 0.75rem;
    align-items: end;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(237, 243, 251, 0.85));
    box-shadow: var(--shadow-sm);
}

.item-row.no-pricing {
    grid-template-columns: 2.2fr 1fr auto;
}

.item-row input {
    padding: 0.75rem 0.9rem;
}

.item-label {
    margin-bottom: 0.35rem;
    color: var(--color-text-soft);
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.summary-section {
    background:
        linear-gradient(180deg, rgba(11, 31, 92, 0.96), rgba(17, 86, 200, 0.92)),
        linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border: 1px solid rgba(17, 86, 200, 0.18);
    border-radius: var(--radius-xl);
    padding: 1.4rem 1.45rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-lg);
    color: white;
}

.summary-row {
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: center;
    gap: 0.75rem;
    padding: 0.8rem 0;
    font-size: 1.02rem;
}

.summary-row:not(:last-child) {
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.summary-row label {
    margin: 0;
    color: white;
}

.summary-row input {
    width: 88px;
    padding: 0.6rem 0.75rem;
    border-color: rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.12);
    color: white;
}

.summary-row input:disabled {
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.78);
}

.summary-row span[style] {
    color: rgba(255, 255, 255, 0.75) !important;
}

.summary-row.tax-row {
    color: #ffe694;
    font-weight: 700;
}

.summary-row.total-row {
    color: white;
    font-size: 1.34rem;
    font-weight: 800;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    min-height: 48px;
    padding: 0.85rem 1.2rem;
    border: none;
    border-radius: 999px;
    font-size: 0.98rem;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

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

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

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #347dff);
    color: white;
    box-shadow: 0 10px 24px rgba(17, 86, 200, 0.25);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--color-primary-hover), var(--color-primary));
}

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

.btn-secondary:hover:not(:disabled) {
    background: #14327f;
}

.btn-success {
    background: var(--color-accent-green);
    color: white;
}

.btn-success:hover:not(:disabled) {
    background: #149248;
}

.btn-danger,
.remove-item-btn {
    background: var(--color-accent-red);
    color: white;
}

.btn-danger:hover:not(:disabled),
.remove-item-btn:hover {
    background: #b93030;
}

.remove-item-btn {
    min-height: 44px;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 16px;
    font-size: 0.92rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform var(--transition-fast), background var(--transition-fast);
}

.button-group,
.modal-buttons,
.history-actions,
.frequent-data-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.button-group {
    margin-top: 1.5rem;
}

.button-group .btn {
    min-width: 220px;
}

.modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    padding: 1.4rem;
    background: var(--color-overlay);
    overflow-y: auto;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    position: relative;
    width: min(100%, 1020px);
    max-height: 92vh;
    overflow-y: auto;
    padding: 1.75rem;
    border: 1px solid rgba(216, 225, 239, 0.8);
    border-radius: var(--radius-xl);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 251, 255, 0.98));
    box-shadow: var(--shadow-lg);
}

.close-modal {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 42px;
    height: 42px;
    border-radius: 999px;
    display: grid;
    place-items: center;
    color: var(--color-text-soft);
    background: var(--color-surface-alt);
    font-size: 1.7rem;
    font-weight: 700;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.close-modal:hover {
    color: var(--color-secondary);
    background: var(--color-primary-soft);
    transform: scale(1.03);
}

.quote-preview {
    background: white;
    padding: 1rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    font-family: Arial, sans-serif;
    line-height: 1.35;
    page-break-inside: avoid;
}

.pdf-export-root {
    position: fixed;
    top: 0;
    left: 0;
    width: 194mm;
    padding: 0;
    margin: 0;
    background: #ffffff;
    z-index: -1;
    visibility: visible;
    opacity: 0.01;
    pointer-events: none;
    overflow: visible;
    display: block;
}

.pdf-export-root .quote-preview {
    width: 194mm;
    margin: 0;
    border: none;
    border-radius: 0;
    box-shadow: none;
}

.quote-header {
    margin-bottom: 0.95rem;
    padding-bottom: 0.65rem;
    border-bottom: 2px solid var(--color-primary);
    page-break-inside: avoid;
}

.quote-header h1 {
    color: var(--color-secondary);
    font-size: 2rem;
    margin-bottom: 0.35rem;
}

.quote-header .quote-number {
    color: var(--color-text-soft);
    font-size: 1.05rem;
}

.quote-customer-info {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
    page-break-inside: avoid;
}

.quote-customer-info div {
    padding: 0.9rem;
    border: 1px solid #e1e8f5;
    border-radius: var(--radius-md);
    background: linear-gradient(180deg, #f9fbff 0%, #edf3fb 100%);
}

.quote-customer-info label {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--color-primary);
    font-weight: 700;
}

.quote-items {
    margin-bottom: 0.95rem;
    page-break-inside: avoid;
}

.quote-items table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.quote-items table thead {
    background: linear-gradient(90deg, var(--color-secondary), var(--color-primary));
    color: white;
}

.quote-items table th,
.quote-items table td {
    padding: 0.65rem 0.55rem;
    text-align: left;
    border-bottom: 1px solid #edf2fa;
    font-size: 0.9rem;
}

.quote-items table thead th {
    border-bottom: 2px solid rgba(255, 255, 255, 0.24);
}

.quote-items table tbody tr:nth-child(even) {
    background: #f8fbff;
}

.quote-items table tbody tr:hover {
    background: #eef5ff;
}

.quote-summary {
    width: min(100%, 330px);
    margin: 0 0 1rem auto;
    padding: 1rem;
    border: 1px solid #d7e4fb;
    border-radius: var(--radius-md);
    background: linear-gradient(180deg, #f7faff 0%, #edf4ff 100%);
    page-break-inside: avoid;
}

.quote-summary-row {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.35rem;
    font-size: 0.92rem;
}

.quote-summary-row.total {
    padding-top: 0.45rem;
    border-top: 2px solid var(--color-primary);
    color: var(--color-secondary);
    font-size: 1.08rem;
    font-weight: 800;
}

.quote-terms {
    margin-bottom: 0.75rem;
    padding: 1rem;
    border: 1px solid #f1d57b;
    border-left: 4px solid var(--color-accent-yellow);
    border-radius: var(--radius-md);
    background: #fff9e8;
    page-break-inside: avoid;
}

.quote-terms h3 {
    margin: 0 0 0.5rem;
    color: #7a5b00;
    font-size: 0.95rem;
}

.quote-terms p {
    margin: 0;
    font-size: 0.85rem;
    line-height: 1.35;
    white-space: pre-wrap;
}

.quote-footer {
    padding-top: 0.6rem;
    border-top: 2px solid var(--color-border);
    text-align: center;
    color: var(--color-text-soft);
    font-size: 0.82rem;
    page-break-inside: avoid;
}

.quote-footer-image {
    display: block;
    width: 100%;
    max-width: 100%;
    margin: 0.9rem auto 0;
    object-fit: contain;
}

.history-container,
.frequent-data-container {
    display: grid;
    gap: 1rem;
}

.saved-data-toolbar {
    margin-bottom: 1rem;
}

.saved-data-toolbar label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 700;
    color: var(--color-text);
}

.saved-data-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.saved-data-actions select {
    flex: 1;
}

.history-item,
.frequent-data-item {
    padding: 1rem 1.05rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, white 0%, #fbfdff 100%);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.history-item {
    border-left: 4px solid var(--color-primary);
    cursor: pointer;
}

.frequent-data-item {
    border-left: 4px solid var(--color-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.history-item:hover,
.frequent-data-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: #bfd1f3;
}

.history-item-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
    margin-bottom: 0.55rem;
}

.history-item-number,
.frequent-data-label {
    color: var(--color-secondary);
    font-weight: 800;
}

.history-item-number {
    font-size: 1.08rem;
}

.history-item-date,
.history-item-details,
.frequent-data-value {
    color: var(--color-text-soft);
    font-size: 0.94rem;
}

.history-item-details {
    margin-bottom: 0.45rem;
}

.history-item-amount {
    color: var(--color-primary);
    font-weight: 800;
}

.frequent-data-info {
    flex: 1;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.35);
    border-top: 3px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.alert {
    position: sticky;
    top: 0;
    z-index: 1200;
    width: min(100% - 1rem, 780px);
    margin: 0.75rem auto;
    padding: 1rem 1.1rem;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-md);
}

.alert-info {
    background: #eef5ff;
    border-color: #cfe1ff;
    color: #19428b;
}

.alert-success {
    background: #e9f9ef;
    border-color: #bfeacc;
    color: #12733c;
}

.alert-warning {
    background: #fff8dd;
    border-color: #f4dc81;
    color: #7a5b00;
}

.alert-error {
    background: #ffebeb;
    border-color: #f5b8b8;
    color: #9f1f1f;
}

.alert-close {
    margin-left: auto;
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
}

.confirm-modal,
.error-modal {
    max-width: 460px;
    text-align: center;
}

.confirm-modal h2,
.error-modal h2 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: 800;
}

.confirm-modal h2 {
    color: var(--color-primary);
}

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

.error-modal h2 {
    color: var(--color-accent-red);
}

.confirm-modal p,
.error-modal p {
    color: var(--color-text-soft);
    margin-bottom: 0.6rem;
    font-size: 0.98rem;
    line-height: 1.55;
}

@media (max-width: 900px) {
    .auth-card {
        grid-template-columns: 1fr;
        padding: 1.15rem;
    }

    .brand-logo-wrap {
        align-items: flex-start;
    }

    .container {
        width: min(100% - 1rem, var(--max-width));
        padding-top: 0.8rem;
    }

    .header {
        top: 0.5rem;
        min-height: 76px;
        padding: 1rem 1.1rem;
        align-items: flex-start;
        flex-direction: column;
    }

    .grid-2,
    .quote-customer-info {
        grid-template-columns: 1fr;
    }

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

    .summary-row {
        grid-template-columns: 1fr;
        justify-items: start;
    }

    .summary-row input {
        width: 100%;
        max-width: 140px;
    }

    .frequent-data-item,
    .history-item-header {
        flex-direction: column;
        align-items: stretch;
    }

    .header-actions {
        width: 100%;
        justify-content: space-between;
        flex-wrap: wrap;
    }
}

@media (max-width: 640px) {
    .auth-shell {
        padding: 1rem;
    }

    .auth-card {
        padding: 0.9rem;
    }

    .brand-logo-wrap {
        flex-direction: column;
    }

    .header h1 {
        font-size: 1.2rem;
    }

    .form-section,
    .modal-content {
        padding: 1.2rem;
    }

    .nav-menu ul {
        flex-direction: column;
    }

    .nav-menu ul li a,
    .button-group .btn,
    .modal-buttons .btn,
    .history-actions .btn,
    .frequent-data-actions .btn,
    .auth-actions .btn,
    .header-signout-btn {
        width: 100%;
    }

    .session-badge {
        width: 100%;
        justify-content: center;
    }

    .quote-preview {
        padding: 0.85rem;
    }

    .quote-header h1 {
        font-size: 1.45rem;
    }

    .quote-items table th,
    .quote-items table td {
        padding: 0.5rem 0.4rem;
        font-size: 0.82rem;
    }

    .quote-summary {
        width: 100%;
    }
}

@media print {
    body {
        background: white;
    }

    .header,
    .nav-menu,
    .button-group,
    .modal-buttons,
    .menu-btn {
        display: none;
    }

    .modal {
        position: static;
        display: block;
        background: white;
        height: auto;
        overflow: visible;
        padding: 0;
    }

    .modal.active {
        display: block;
        align-items: unset;
        justify-content: unset;
    }

    .modal-content {
        box-shadow: none;
        max-height: none;
        width: 100%;
        max-width: 100%;
        padding: 0;
        border: none;
        border-radius: 0;
        position: static;
        background: white;
    }

    .quote-preview {
        box-shadow: none;
        border: none;
        margin: 0;
        page-break-inside: avoid;
    }

    .close-modal {
        display: none;
    }
}