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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background:
        radial-gradient(1000px 520px at 10% -10%, rgba(35, 76, 136, 0.25), transparent 55%),
        radial-gradient(900px 500px at 95% 0%, rgba(166, 42, 42, 0.14), transparent 50%),
        #030507;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #e7edf7;
}

.login-container {
    width: 100%;
    max-width: 430px;
    padding: 24px;
}

.login-card {
    background: linear-gradient(180deg, rgba(13, 17, 23, 0.98) 0%, rgba(7, 10, 14, 0.98) 100%);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.55);
    padding: 28px;
    backdrop-filter: blur(8px);
}

.login-header {
    text-align: center;
    margin-bottom: 24px;
}

.login-logo {
    width: 20rem;
    height: auto;
    object-fit: contain;
    margin-bottom: 8px;
    filter: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.45));
}

.login-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #ffffff;
    margin-bottom: 4px;
}

.login-subtitle {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #98a3b2;
}

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

.form-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #a4afbf;
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 12px 13px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.04);
    color: #eef3fb;
    border-radius: 10px;
    font-size: 14px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.form-input:focus {
    outline: none;
    border-color: rgba(53, 130, 255, 0.75);
    box-shadow: 0 0 0 3px rgba(53, 130, 255, 0.18);
    background: rgba(255, 255, 255, 0.06);
}

.form-input::placeholder {
    color: #7f8ba0;
}

.submit-btn {
    width: 100%;
    position: relative;
    padding: 12px;
    background: linear-gradient(180deg, rgba(35, 95, 172, 0.95), rgba(23, 71, 134, 0.95));
    color: #ffffff;
    border: 1px solid rgba(117, 172, 245, 0.38);
    border-radius: 10px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
    margin-top: 8px;
}

.submit-btn:hover {
    box-shadow: 0 10px 22px rgba(25, 87, 161, 0.36);
    transform: translateY(-1px);
    filter: brightness(1.04);
}

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

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.error-message {
    background: rgba(211, 47, 47, 0.12);
    border: 1px solid rgba(255, 99, 99, 0.35);
    color: #ffd0d0;
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 13px;
    margin-bottom: 14px;
    display: none;
}

.error-message.show {
    display: block;
}

.loading-spinner {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
}

.submit-btn.loading {
    display: flex;
    align-items: center;
    justify-content: center;
}

.submit-btn.loading .loading-spinner {
    display: block;
}

.submit-btn.loading .btn-text {
    opacity: 0;
    position: absolute;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.form-footer {
    text-align: center;
    margin-top: 16px;
    font-size: 11px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: #7f8ba0;
}

.info-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 12px;
    color: #b8c2d1;
    margin-top: 14px;
    line-height: 1.4;
}

.info-box strong {
    color: #dfe8f6;
}

.orientation-hint {
    display: none;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 12px;
    z-index: 999;
    justify-content: center;
    pointer-events: none;
    padding: 0 12px;
}

.orientation-hint__box {
    max-width: 440px;
    width: 100%;
    display: grid;
    gap: 2px;
    padding: 10px 12px;
    border-radius: 12px;
    background: rgba(8, 12, 18, 0.92);
    border: 1px solid rgba(143, 174, 221, 0.35);
    color: #e8eef7;
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.35);
    text-align: center;
}

.orientation-hint__box strong {
    font-size: 0.78rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.orientation-hint__box span {
    font-size: 0.72rem;
    color: #b6c3d9;
}

@media (max-width: 640px) {
    .login-container {
        padding: 16px;
    }

    .login-card {
        padding: 22px;
        border-radius: 14px;
    }

    .login-logo {
        width: 130px;
    }
}

@media (max-width: 655px) and (orientation: portrait) {
    .orientation-hint {
        display: flex;
    }
}