* {
      box-sizing: border-box;
    }

    html {
      min-height: 100%;
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
      font-size: var(--login-font-body);
      background: linear-gradient(160deg, var(--page-bg-top) 0%, var(--page-bg-mid) 45%, var(--page-bg) 100%);
      background-attachment: fixed;
      color: var(--text);
      display: flex;
      flex-direction: column;
      align-items: stretch;
      justify-content: flex-start;
    }

    .page-shell {
      flex: 1 1 auto;
      display: flex;
      flex-direction: column;
      align-items: center;
      width: 100%;
      min-height: 100vh;
    }

    .shell {
      display: grid;
      /* Sol: giriş (sabit), sağ: önizleme; blok ortada, mavi zemin tam ekran */
      grid-template-columns: minmax(400px, 500px) minmax(0, 1fr);
      grid-template-rows: 1fr auto;
      justify-items: stretch;
      width: 100%;
      max-width: 1120px;
      margin-inline: auto;
      flex: 1 1 auto;
      min-height: 100%;
      background: transparent;
      box-shadow: none;
    }

    @media (min-width: 901px) {
      body,
      .page-shell,
      .shell {
        min-height: 100dvh;
      }

      .shell {
        width: min(1120px, 100%);
      }

      .form-side {
        grid-column: 1;
        grid-row: 1;
        justify-self: start;
        width: 100%;
        max-width: 500px;
        min-width: 400px;
      }

      .preview-side {
        grid-column: 2;
        grid-row: 1 / -1;
        justify-self: stretch;
        min-width: 0;
        overflow: hidden;
      }

      .site-footer {
        grid-column: 1;
        grid-row: 2;
        justify-self: start;
        width: 100%;
        max-width: 500px;
      }
    }

    @media (max-width: 900px) {
      .shell {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
      }
      .form-side {
        grid-column: 1;
        grid-row: 1;
        min-width: 0;
        border-right: none;
        justify-content: flex-start;
        padding-top: max(0.65rem, env(safe-area-inset-top, 0px));
        padding-bottom: 1.15rem;
      }
    }

    .form-side {
      grid-column: 1;
      grid-row: 1;
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: clamp(28px, 4.5vw, 52px) clamp(28px, 4vw, 48px);
      background: var(--surface);
      border-right: 1px solid var(--border);
    }

    /* Kompakt marka — login-design-orka-portal.html varyant C */
    .brand-hero {
      position: relative;
      margin-bottom: 1.25rem;
      padding: 1rem 0 1.25rem;
      text-align: center;
      overflow: visible;
      flex-shrink: 0;
    }

    .brand-hero::before {
      content: "";
      position: absolute;
      inset: -20% -10%;
      background:
        radial-gradient(ellipse 70% 55% at 50% 0%, rgba(15, 76, 129, 0.1) 0%, transparent 62%),
        radial-gradient(ellipse 50% 40% at 80% 100%, rgba(30, 107, 168, 0.07) 0%, transparent 55%);
      pointer-events: none;
    }

    .brand-hero::after {
      content: "";
      position: absolute;
      left: 12%;
      right: 12%;
      bottom: 0;
      height: 3px;
      border-radius: 999px;
      background: linear-gradient(90deg, transparent, var(--accent) 20%, #1e6ba8 50%, var(--accent) 80%, transparent);
      opacity: 0.85;
    }

    .brand-logo {
      position: relative;
      z-index: 1;
      display: block;
      width: clamp(2.75rem, 8vw, 3.25rem);
      height: auto;
      margin: 0 auto 0.65rem;
      object-fit: contain;
      filter: drop-shadow(0 6px 14px rgba(15, 76, 129, 0.18));
    }

    .brand-title {
      position: relative;
      z-index: 1;
      display: flex;
      align-items: baseline;
      justify-content: center;
      flex-wrap: wrap;
      gap: 0.2em 0.28em;
      margin: 0;
      font-family: "Outfit", "Source Sans 3", system-ui, sans-serif;
      line-height: 1;
    }

    .brand-orka {
      display: inline;
      font-size: var(--login-font-brand);
      font-weight: 800;
      color: var(--text);
      letter-spacing: 0.08em;
    }

    .brand-portal {
      display: inline;
      font-size: var(--login-font-brand);
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--accent);
      -webkit-text-fill-color: currentColor;
      background: linear-gradient(118deg, #052540 0%, var(--accent) 38%, #1a7ec4 72%, #0f4c81 100%);
      -webkit-background-clip: text;
      background-clip: text;
    }

    @supports (-webkit-background-clip: text) or (background-clip: text) {
      .brand-portal {
        color: transparent;
        -webkit-text-fill-color: transparent;
      }
    }

    .site-footer {
      width: 100%;
      margin: 0;
      padding: 0.9rem clamp(28px, 4vw, 48px) 1.15rem;
      text-align: center;
      font-size: var(--login-font-footer);
      line-height: 1.45;
      color: var(--muted);
      font-weight: 400;
      background: var(--surface);
      border-right: 1px solid var(--border);
    }

    @media (max-width: 900px) {
      .site-footer {
        grid-column: 1;
        grid-row: 3;
        border-right: none;
      }
    }

    .site-footer a.footer-company {
      color: var(--muted);
      font-weight: 400;
      text-decoration: none;
    }

    .site-footer a.footer-company:hover {
      color: var(--accent);
      text-decoration: none;
    }

    .site-footer a.footer-company:hover strong {
      text-decoration: underline;
    }

    .site-footer a.footer-company strong {
      font-weight: 700;
      color: var(--text);
    }

    .panel {
      display: none;
      animation: fade 0.25s ease;
    }

    .panel.active {
      display: block;
    }

    .form-message {
      min-height: var(--login-form-message-min-h);
      margin: var(--login-form-message-gap) 0 0;
      font-size: var(--login-font-message);
      line-height: 1.4;
    }

    .form-message-ok {
      color: #166534;
    }

    .form-message-err {
      color: #b91c1c;
    }

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

    .panel h2 {
      font-size: var(--login-font-heading);
      font-weight: 700;
      letter-spacing: -0.02em;
      margin: 0 0 0.4rem;
      color: var(--text);
    }

    .panel > p.sub {
      margin: 0 0 1.5rem;
      color: var(--muted);
      font-size: var(--login-font-sub);
      line-height: 1.55;
    }

    .field-hint {
      font-size: var(--login-font-hint);
      color: var(--muted);
      margin: 0 0 1rem;
      line-height: 1.4;
    }

    .field-hint.field-note {
      margin-top: 0.35rem;
      margin-bottom: 0;
      text-align: left;
    }

    label {
      display: block;
      font-size: var(--login-font-label);
      font-weight: 600;
      color: var(--text);
      margin-bottom: 0.4rem;
    }

    .field {
      margin-bottom: var(--login-form-field-gap);
    }

    input {
      width: 100%;
      padding: var(--login-input-padding-y) var(--login-input-padding-x);
      border-radius: var(--radius-sm);
      border: 1px solid var(--border);
      background: var(--form-input-bg);
      color: var(--text);
      font-family: inherit;
      font-size: var(--login-font-input);
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
    }

    input::placeholder {
      color: var(--form-input-placeholder);
      font-size: var(--login-font-placeholder);
    }

    input:hover {
      border-color: var(--form-input-border-hover);
    }

    input:focus,
    input:focus-visible {
      background: var(--form-input-bg-focus);
      border-color: var(--login-input-focus-border);
      box-shadow: var(--login-input-focus-shadow);
    }

    input:disabled {
      background: var(--form-input-bg-disabled);
      color: var(--muted);
      cursor: not-allowed;
      border-color: var(--form-input-border-disabled);
      box-shadow: none;
    }

    input:disabled:hover {
      border-color: var(--form-input-border-disabled);
    }

    .form-section-split {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      margin: 1.35rem 0 1.1rem;
    }

    .form-section-split .form-section-line {
      flex: 1;
      height: 1px;
      background: var(--border);
    }

    .form-section-title {
      margin: 0;
      flex-shrink: 0;
      white-space: nowrap;
      font-family: "Outfit", "Source Sans 3", system-ui, sans-serif;
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      color: var(--muted);
    }

    /* Kayıt / parola sıfırlama — dashboard modal compact-form ile uyumlu */
    .panel.panel--compact-form > h2 {
      font-size: var(--login-font-heading);
      margin-bottom: 0.2rem;
      color: var(--text);
      font-weight: 700;
      letter-spacing: -0.02em;
    }

    .panel.panel--compact-form h2.form-section-title {
      color: var(--muted);
      font-size: 0.75rem;
      font-weight: 600;
      letter-spacing: 0.06em;
      text-transform: uppercase;
    }

    .panel.panel--compact-form > p.sub,
    .panel.panel--compact-form > p.field-hint {
      font-size: var(--login-font-sub);
      margin-bottom: 0.85rem;
      line-height: 1.35;
    }

    .panel.panel--compact-form .field {
      margin-bottom: 0.55rem;
    }

    .panel.panel--compact-form label {
      font-size: var(--login-font-label);
      margin-bottom: 0.22rem;
    }

    .panel.panel--compact-form input {
      padding: var(--login-input-padding-y) var(--login-input-padding-x);
      font-size: var(--login-font-input);
      border-radius: 6px;
    }

    .panel.panel--compact-form .input-icon-wrap input {
      padding: var(--login-input-padding-y) var(--login-input-padding-x)
        var(--login-input-padding-y) 2.05rem;
    }

    .panel.panel--compact-form .input-icon-wrap .input-icon {
      left: 0.55rem;
      width: 0.95rem;
      height: 0.95rem;
    }

    .panel.panel--compact-form .form-section-split {
      margin: 0.65rem 0 0.5rem;
      gap: 0.5rem;
    }

    .panel.panel--compact-form .form-section-title {
      font-size: var(--login-font-label);
    }

    .panel.panel--compact-form .form-message {
      margin: 0.45rem 0 0;
      font-size: var(--login-font-message);
    }

    .panel.panel--compact-form .btn-primary {
      padding: var(--login-button-padding-y) var(--login-button-padding-x);
      font-size: var(--login-font-button);
    }

    .panel.panel--compact-form .hint {
      margin-top: 0.85rem;
      font-size: var(--login-font-hint);
    }

    .panel.panel--compact-form .hint .link {
      font-size: var(--login-font-link);
    }

    .input-icon-wrap {
      position: relative;
    }

    .input-icon-wrap .input-icon {
      position: absolute;
      left: 0.85rem;
      top: 50%;
      transform: translateY(-50%);
      width: 1.125rem;
      height: 1.125rem;
      color: var(--form-input-icon);
      pointer-events: none;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: color 0.2s;
    }

    .input-icon-wrap .input-icon svg {
      width: 100%;
      height: 100%;
      display: block;
    }

    .input-icon-wrap input {
      padding-top: var(--login-input-padding-y);
      padding-bottom: var(--login-input-padding-y);
      padding-right: var(--login-input-padding-x);
      padding-left: 2.45rem;
    }

    .input-icon-wrap:focus-within .input-icon {
      color: var(--accent);
    }

    .input-icon-wrap:has(input:disabled) .input-icon {
      color: var(--form-input-icon-disabled);
    }

    .hint-stack .hint-row {
      margin-top: 0;
    }

    .hint-stack {
      margin-top: 2.75rem;
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 0.75rem;
    }

    .row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 1.25rem;
      flex-wrap: wrap;
      gap: 0.5rem;
    }