:root {
    --text: #132235;
    --muted: #4f6478;
    --accent: #29b765;
    --accent-strong: #1d8e4c;
    --danger: #cb2f4e;
    --bg-base: #0f2236;
    --bg-overlay: rgba(6, 16, 28, 0.24);
    --card-bg: rgba(247, 252, 255, 0.9);
    --card-border: rgba(255, 255, 255, 0.6);
    --card-highlight: rgba(255, 255, 255, 0.42);
    --input-bg: rgba(255, 255, 255, 0.78);
    --input-bg-focus: rgba(255, 255, 255, 0.96);
    --input-border: rgba(19, 34, 53, 0.17);
    --input-focus: rgba(41, 183, 101, 0.58);
    --focus-ring: rgba(41, 183, 101, 0.22);
    --security-note: rgba(19, 34, 53, 0.7);
    --shadow-card: 0 20px 48px rgba(3, 12, 24, 0.34);
    --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

@media (prefers-color-scheme: dark) {
    :root {
        --text: #eaf3ff;
        --muted: #b7c5d8;
        --card-bg: rgba(12, 22, 35, 0.9);
        --card-border: rgba(218, 231, 246, 0.2);
        --card-highlight: rgba(255, 255, 255, 0.12);
        --input-bg: rgba(10, 17, 28, 0.72);
        --input-bg-focus: rgba(12, 23, 36, 0.9);
        --input-border: rgba(175, 195, 216, 0.32);
        --input-focus: rgba(75, 211, 136, 0.72);
        --focus-ring: rgba(75, 211, 136, 0.24);
        --security-note: rgba(226, 238, 252, 0.72);
        --shadow-card: 0 24px 54px rgba(1, 7, 15, 0.56);
        --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.08);
    }
}

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

html {
    height: 100%;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

@keyframes cardEnter {
    from {
        transform: translateY(10px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

body {
    min-height: 100vh;
    min-height: 100dvh;
    font-family: "Manrope", "Segoe UI", sans-serif;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    padding:
        calc(18px + env(safe-area-inset-top))
        calc(16px + env(safe-area-inset-right))
        calc(18px + env(safe-area-inset-bottom))
        calc(16px + env(safe-area-inset-left));
    overflow-x: hidden;
    background-color: var(--bg-base);
    background-image:
        linear-gradient(140deg, rgba(6, 18, 31, 0.34), var(--bg-overlay)),
        radial-gradient(110% 80% at 80% 14%, rgba(41, 183, 101, 0.2), transparent 54%),
        url('/images/background.webp');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: scroll;
}

.page-shell {
    width: 100%;
    display: flex;
    justify-content: center;
}

.login-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 22px;
    padding: 30px 30px 24px;
    width: 100%;
    max-width: 430px;
    box-shadow: var(--shadow-card), var(--shadow-inset);
    position: relative;
    z-index: 1;
    animation: cardEnter 0.35s ease-out both;
}

.login-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(160deg, var(--card-highlight), rgba(255, 255, 255, 0.1));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.logo {
    text-align: center;
    margin-bottom: 18px;
}

.logo-image {
    width: min(300px, 100%);
    height: 120px;
    object-fit: cover;
    object-position: center;
    display: block;
    margin: 0 auto 10px;
    border-radius: 14px;
    box-shadow: 0 10px 24px rgba(7, 15, 26, 0.2);
    user-select: none;
    pointer-events: none;
}

.logo-text {
    margin-top: 2px;
    font-size: 30px;
    line-height: 1.05;
    letter-spacing: -0.03em;
    font-weight: 800;
    color: var(--text);
}

.logo-subtitle {
    margin-top: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 12px;
    color: var(--muted);
    margin-bottom: 7px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.form-group input {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 12px;
    padding: 13px 14px;
    font-size: 16px;
    color: var(--text);
    transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
    outline: none;
}

.form-group input:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 4px var(--focus-ring);
    background: var(--input-bg-focus);
}

.form-group input::placeholder {
    color: var(--muted);
    opacity: 0.72;
}

.btn-login {
    width: 100%;
    margin-top: 4px;
    background: linear-gradient(160deg, var(--accent), var(--accent-strong));
    border: none;
    border-radius: 12px;
    padding: 13px 14px;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: #fff;
    cursor: pointer;
    box-shadow: 0 10px 22px rgba(41, 183, 101, 0.3);
    transition: transform 0.18s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

@media (hover: hover) {
    .btn-login:hover {
        transform: translateY(-1px);
        box-shadow: 0 14px 26px rgba(41, 183, 101, 0.36);
        filter: brightness(1.03);
    }
}

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

.btn-login:focus-visible {
    box-shadow: 0 0 0 4px var(--focus-ring), 0 10px 22px rgba(41, 183, 101, 0.3);
    outline: none;
}

.error-message {
    background: rgba(203, 47, 78, 0.12);
    border: 1px solid rgba(203, 47, 78, 0.28);
    border-radius: 12px;
    padding: 11px 12px;
    margin-bottom: 14px;
    color: var(--danger);
    font-size: 13px;
    text-align: left;
    font-weight: 600;
}

.footer-hint {
    text-align: center;
    margin-top: 16px;
    color: var(--muted);
    font-size: 12px;
}

.security-note {
    margin-top: 10px;
    text-align: center;
    font-size: 11px;
    color: var(--security-note);
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

@media (max-width: 520px) {
    body {
        align-items: flex-start;
    }

    .page-shell {
        padding-top: clamp(12px, 7vh, 48px);
        padding-bottom: 8px;
    }

    .login-card {
        max-width: 100%;
        padding: 22px 18px 18px;
        border-radius: 18px;
    }

    .logo-text {
        font-size: 25px;
    }

    .logo-image {
        width: min(260px, 100%);
        height: 102px;
    }
}

@media (max-height: 680px) {
    body {
        align-items: flex-start;
    }

    .page-shell {
        padding-top: 10px;
        padding-bottom: 10px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}