:root {
    --cstur-primary: #1677d8;
    --cstur-primary-dark: #0f5fae;
    --cstur-accent: #f28c28;
    --cstur-accent-soft: #ffd28a;
    --cstur-bg-light: #f7f4ee;
    --cstur-bg-dark: #163a67;
    --cstur-petrol: #163a67;
    --cstur-graphite: #ffbf66;
    --cstur-text: #172b4d;
    --cstur-border: #d8e1ec;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Inter", sans-serif;
    background: var(--cstur-bg-light);
    color: var(--cstur-text);
}

.cstur-login-shell {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

.cstur-login-brand {
    display: none;
    width: 50%;
    position: relative;
    overflow: hidden;
    background: var(--cstur-petrol);
}

.cstur-login-brand-bg {
    position: absolute;
    inset: 0;
    opacity: 0.38;
    background-size: cover;
    background-position: center;
    filter: grayscale(0.25);
}

.cstur-login-brand-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, #163a67 0%, rgba(22, 58, 103, 0.82) 48%, rgba(22, 58, 103, 0.22) 100%);
}

.cstur-login-brand-content {
    position: relative;
    z-index: 2;
    height: 100%;
    padding: 64px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.cstur-login-brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fff;
    font-size: 30px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.cstur-login-brand-logo img {
    height: 40px;
    width: auto;
}

.cstur-login-brand-title {
    max-width: 520px;
    color: #fff;
    font-size: 44px;
    line-height: 1.06;
    margin: 0 0 16px;
    font-weight: 800;
}

.cstur-login-brand-subtitle {
    margin: 0;
    max-width: 500px;
    color: var(--cstur-graphite);
    font-size: 18px;
    line-height: 1.5;
}

.cstur-login-brand-footer {
    color: var(--cstur-graphite);
    font-size: 13px;
}

.cstur-login-form-wrap {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px;
    background: var(--cstur-bg-light);
}

.cstur-login-form-inner {
    width: 100%;
    max-width: 440px;
}

.cstur-mobile-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 38px;
    font-size: 28px;
    font-weight: 800;
    color: var(--cstur-petrol);
}

.cstur-mobile-logo img {
    height: 34px;
    width: auto;
}

.cstur-login-title {
    margin: 0 0 6px;
    color: var(--cstur-petrol);
    font-size: 36px;
    line-height: 1.1;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.cstur-login-description {
    margin: 0 0 32px;
    color: #5d6d83;
    font-size: 15px;
}

.cstur-login-message {
    margin: 0 0 18px;
    min-height: 22px;
    font-size: 13px;
    color: #5d6d83;
}

.cstur-login-message.is-error {
    color: #bf3b3b;
    font-weight: 600;
}

.cstur-field {
    margin-bottom: 18px;
}

.cstur-login-panel.is-hidden {
    display: none;
}

.cstur-field-label {
    display: block;
    margin-bottom: 8px;
    color: #18365f;
    font-size: 13px;
    font-weight: 700;
}

.cstur-field-input-wrap {
    position: relative;
}

.cstur-field-input-wrap .material-symbols-outlined {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 20px;
    color: #7e8aa0;
    pointer-events: none;
}

.cstur-field-input {
    width: 100%;
    height: 48px;
    border-radius: 12px;
    border: 1px solid var(--cstur-border);
    background: #fff;
    color: #172b4d;
    padding: 0 14px 0 42px;
    font-size: 14px;
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease;
}

.cstur-field-input:focus {
    border-color: var(--cstur-primary);
    box-shadow: 0 0 0 4px rgba(22, 119, 216, 0.16);
}

.cstur-submit {
    width: 100%;
    height: 50px;
    border: 0;
    border-radius: 12px;
    background: var(--cstur-primary);
    color: #ffffff;
    font-size: 15px;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 14px 28px rgba(22, 119, 216, 0.18);
    transition: filter .2s ease, transform .2s ease;
}

.cstur-submit:hover {
    filter: brightness(0.98);
    transform: translateY(-1px);
}

.cstur-submit:disabled {
    cursor: wait;
    opacity: 0.8;
    transform: none;
}

.cstur-inline-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cstur-secondary-button {
    width: 100%;
    height: 48px;
    border-radius: 12px;
    border: 1px solid var(--cstur-border);
    background: #fff;
    color: var(--cstur-primary-dark);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: border-color .2s ease, background .2s ease, transform .2s ease;
}

.cstur-secondary-button:hover {
    border-color: rgba(22, 119, 216, 0.32);
    background: #f8fbff;
    transform: translateY(-1px);
}

.cstur-text-action {
    margin-top: 14px;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--cstur-primary);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
}

.cstur-text-action:hover {
    color: var(--cstur-primary-dark);
}

@media (min-width: 992px) {
    .cstur-login-brand {
        display: block;
    }

    .cstur-mobile-logo {
        display: none;
    }

    .cstur-login-form-wrap {
        width: 50%;
        padding: 40px;
    }
}