/* DiagramStore brand tokens — shared across landing, auth, and dashboard polish */

:root {
    --ds-brand-orange: #E65C00;
    --ds-brand-orange-hover: #cc5200;
    --ds-brand-orange-tint: #FFF0E6;
    --ds-brand-orange-muted: rgba(230, 92, 0, 0.12);
    --ds-page-bg: #ffffff;
    --ds-surface: #f9f9f9;
    --ds-canvas-white: #ffffff;
    --ds-on-surface: #1b1b1b;
    --ds-on-surface-muted: #5e5e5e;
    --ds-outline-variant: #e1bfb2;
    --ds-input-border: #D1D5DB;
    --ds-shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.05);
    --ds-radius-lg: 0.5rem;
    --ds-font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --ds-margin-mobile: 16px;
    --ds-margin-desktop: 64px;
    --ds-max-width: 1280px;
}

/* ---- Auth pages (Login / Register) ---- */

.ds-auth-page {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: var(--ds-font);
    color: var(--ds-on-surface);
    background: var(--ds-page-bg);
    -webkit-font-smoothing: antialiased;
}

.ds-auth-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
    padding: 0 var(--ds-margin-mobile);
    border-bottom: 1px solid var(--ds-outline-variant);
    background: var(--ds-page-bg);
}

@media (min-width: 768px) {
    .ds-auth-header {
        padding: 0 var(--ds-margin-desktop);
    }
}

.ds-auth-header-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--ds-on-surface);
}

.ds-auth-header-logo img {
    height: 2.5rem;
    width: auto;
}

.ds-auth-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.ds-auth-nav-link {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-decoration: none;
    color: var(--ds-on-surface);
    transition: color 0.2s;
}

.ds-auth-nav-link:hover {
    color: var(--ds-brand-orange);
}

.ds-auth-nav-link.is-active {
    color: var(--ds-brand-orange);
    font-weight: 700;
    opacity: 0.85;
}

.ds-auth-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem var(--ds-margin-mobile);
}

.ds-auth-brand-mark {
    margin-bottom: 2rem;
    text-align: center;
}

.ds-auth-brand-mark img {
    width: 6rem;
    height: 6rem;
    object-fit: contain;
}

.ds-auth-card {
    width: 100%;
    max-width: 28rem;
    padding: 2rem;
    background: var(--ds-canvas-white);
    border: 1px solid var(--ds-surface);
    border-radius: var(--ds-radius-lg);
    box-shadow: var(--ds-shadow-soft);
}

.ds-auth-card h1 {
    margin: 0 0 1.5rem;
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    color: #000;
}

.ds-auth-subtitle {
    margin: -0.75rem 0 1.25rem;
    text-align: center;
    font-size: 14px;
    line-height: 1.5;
    color: var(--ds-on-surface-muted);
}

.ds-auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.ds-auth-field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.ds-auth-field label {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: #000;
}

.ds-auth-field input[type="email"],
.ds-auth-field input[type="password"],
.ds-auth-field input[type="text"] {
    width: 100%;
    height: 3rem;
    padding: 0 1rem;
    border: 1px solid var(--ds-input-border);
    border-radius: var(--ds-radius-lg);
    background: #fff;
    color: #000;
    font-size: 1rem;
    font-family: var(--ds-font);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.ds-auth-field input:focus {
    outline: none;
    border-color: var(--ds-brand-orange);
    box-shadow: 0 0 0 2px rgba(230, 92, 0, 0.2);
}

.ds-auth-field input:focus + .text-danger,
.ds-auth-field:focus-within label {
    color: var(--ds-brand-orange);
}

.ds-auth-btn-primary {
    width: 100%;
    height: 3rem;
    margin-top: 0.5rem;
    border: none;
    border-radius: var(--ds-radius-lg);
    background: var(--ds-brand-orange);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
}

.ds-auth-btn-primary:hover {
    opacity: 0.9;
}

.ds-auth-btn-primary:active {
    transform: scale(0.98);
}

.ds-auth-links {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
}

.ds-auth-links a {
    font-size: 12px;
    color: #000;
    text-decoration: underline;
    text-decoration-color: var(--ds-input-border);
    text-underline-offset: 4px;
    transition: color 0.2s;
}

.ds-auth-links a:hover {
    color: var(--ds-brand-orange);
}

.ds-auth-divider {
    margin: 1.5rem 0;
    text-align: center;
    font-size: 14px;
    color: var(--ds-on-surface-muted);
}

.ds-auth-socials {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.ds-auth-socials button {
    width: 2.75rem;
    height: 2.75rem;
    border: 1px solid var(--ds-input-border);
    border-radius: 999px;
    background: #fff;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}

.ds-auth-socials button:hover {
    border-color: var(--ds-brand-orange);
    background: var(--ds-brand-orange-tint);
}

.ds-auth-footer {
    padding: 2rem var(--ds-margin-mobile);
    text-align: center;
    border-top: 1px solid var(--ds-outline-variant);
    background: var(--ds-page-bg);
}

.ds-auth-footer-brand {
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.ds-auth-footer-copy {
    font-size: 12px;
    color: var(--ds-on-surface-muted);
}

.ds-auth-validation-summary {
    font-size: 14px;
    color: #ba1a1a;
    margin-bottom: 0.5rem;
}

.ds-auth-field .text-danger {
    font-size: 12px;
}