:root {
    --nav-bg: rgba(10, 18, 38, 0.86);
    --nav-border: rgba(255, 255, 255, 0.16);
    --nav-text: #eaf0f5;
    --nav-active: #88a9c6;

    --ui-panel-bg: rgba(0, 0, 40, 0.72);
    --ui-border: rgba(255, 255, 255, 0.18);
    --ui-text: #ffffff;
    --ui-title: #e1e6eb;
    --ui-accent: #3a5a7e;
    --ui-accent-hover: #2c4968;
    --ui-input-bg: rgba(255, 255, 255, 0.94);
    --ui-input-text: #2b2b2b;
    --ui-muted: #b8c2cc;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    font-family: Arial, sans-serif;
}

.base-layout {
    min-height: 100vh;
    color: var(--ui-text);
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(6px);
    background: var(--nav-bg);
    border-bottom: 1px solid var(--nav-border);
}

.navbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}

.brand {
    text-decoration: none;
    color: var(--nav-text);
    font-weight: 700;
    letter-spacing: 0.4px;
}

.nav-links {
    display: flex;
    gap: 8px;
}

.nav-link {
    text-decoration: none;
    color: var(--nav-text);
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid transparent;
}

.nav-link:hover {
    border-color: var(--nav-border);
}

.nav-link.active {
    color: var(--nav-active);
    border-color: var(--nav-border);
}

.page-wrap {
    min-height: calc(100vh - 62px);
}

.home-bg {
    background: radial-gradient(circle at 20% 20%, #2d4d6b 0%, #122133 45%, #0a1422 100%);
}

.home-card {
    max-width: 760px;
    margin: 84px auto;
    background: rgba(9, 23, 44, 0.74);
    border: 1px solid var(--ui-border);
    border-radius: 14px;
    padding: 42px;
    text-align: center;
}

.home-card h1 {
    margin: 0 0 18px;
    font-size: 40px;
    color: var(--ui-title);
}

.home-card p {
    margin: 0 0 28px;
    line-height: 1.5;
    color: #d3dde8;
}

.home-cta-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.cta-button {
    display: inline-block;
    text-decoration: none;
    padding: 14px 22px;
    border-radius: 8px;
    background: var(--ui-accent);
    color: #fff;
    font-weight: 600;
}

.cta-button:hover {
    background: var(--ui-accent-hover);
}

.cta-alt {
    background: #365f4a;
}

.cta-alt:hover {
    background: #2b4e3d;
}

.training-bg {
    background-image: url('shooter_background.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

.target-page-shell {
    min-height: calc(100vh - 62px);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    color: var(--ui-text);
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.6);
    padding-top: clamp(22px, 6.5vh, 80px);
    padding-bottom: clamp(18px, 4vh, 56px);
    padding-left: 16px;
    padding-right: 16px;
}

.container {
    width: 100%;
    max-width: 520px;
    background-color: var(--ui-panel-bg);
    border: 1px solid var(--ui-border);
    border-radius: 10px;
    padding: 26px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
}

.container h1 {
    text-align: center;
    margin: 0 0 40px 0;
    color: var(--ui-title);
    font-size: 36px;
    font-weight: 700;
}

form {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.form-group label {
    flex: 1;
    text-align: right;
    font-size: 16px;
    font-weight: 500;
    min-width: 150px;
}

.control {
    flex: 1;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.control input,
.control select {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 6px;
    background-color: var(--ui-input-bg);
    color: var(--ui-input-text);
}

input[type='number']::-webkit-outer-spin-button,
input[type='number']::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type='number'] {
    -moz-appearance: textfield;
    appearance: textfield;
}

input[type='checkbox'] {
    accent-color: var(--ui-accent);
    width: auto;
    transform: scale(1.18);
    cursor: pointer;
}

.stepper-btn {
    width: 48px;
    height: 42px;
    border-radius: 6px;
    border: 1px solid var(--ui-border);
    background-color: rgba(255, 255, 255, 0.12);
    color: var(--ui-text);
    cursor: pointer;
    font-size: 20px;
    font-weight: 700;
    flex: 0 0 auto;
}

.stepper-btn:hover {
    background-color: rgba(255, 255, 255, 0.18);
}

.stepper-input {
    text-align: center;
}

input[type='color'] {
    width: 100%;
    height: 44px;
    padding: 0;
    border: 1px solid #ccc;
    border-radius: 6px;
    background: var(--ui-input-bg);
    cursor: pointer;
}

.error {
    background-color: rgba(120, 0, 0, 0.65);
    color: #ffffff;
    padding: 12px;
    border-radius: 6px;
    text-align: center;
    margin-bottom: 14px;
    font-size: 15px;
}

button[type='submit'] {
    width: 100%;
    padding: 14px;
    font-size: 18px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    border-radius: 6px;
    background-color: var(--ui-accent);
    color: #ffffff;
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin-top: 10px;
}

button[type='submit']:hover {
    background-color: var(--ui-accent-hover);
}

footer {
    width: 100%;
    max-width: 760px;
    background-color: var(--ui-panel-bg);
    border: 1px solid var(--ui-border);
    border-radius: 10px;
    padding: 14px 0;
    margin-bottom: clamp(14px, 2vh, 32px);
}

.footer-inner {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.footer-label {
    font-size: 15px;
    color: var(--ui-muted);
    font-weight: 400;
}

.footer-logo {
    height: 42px;
    filter: drop-shadow(1px 1px 2px rgba(0, 0, 0, 0.6));
    cursor: pointer;
    display: block;
}

@media (max-width: 700px) {
    .navbar-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 520px) {
    .home-card {
        margin: 36px 14px;
        padding: 24px;
    }

    .home-card h1 {
        font-size: 30px;
    }

    .container {
        padding: 20px;
    }

    .container h1 {
        font-size: 28px;
        margin-bottom: 30px;
    }

    .form-group label {
        min-width: 120px;
    }

    .footer-logo {
        height: 36px;
    }

    .stepper-btn {
        width: 46px;
    }
}