/* --- Core Reset & Design Variables --- */
:root {
    --bg-dark: #0a0e14;
    --bg-card: #0f1622;
    --accent-amber: #ffaa00;
    --text-primary: #e2e8f0;
    --text-secondary: #64748b;
    --border-color: #1e293b;
    --glow-amber: rgba(255, 170, 0, 0.15);
    --alert-red: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Courier New', Courier, monospace; /* Monospace font anchors the tactical/tech aesthetic */
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

/* --- Tactile Background Grid --- */
.background-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(to right, rgba(30, 41, 59, 0.3) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(30, 41, 59, 0.3) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: 1;
}

/* --- Central Card Layout --- */
.login-container {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    width: 100%;
    max-width: 440px;
    padding: 2.5rem;
    z-index: 2;
    position: relative;
}

/* Corner brackets for an industrial/military UI flare */
.login-container::before, .login-container::after {
    content: '';
    position: absolute;
    width: 15px;
    height: 15px;
    border-color: var(--accent-amber);
    border-style: solid;
}
.login-container::before {
    top: -1px;
    left: -1px;
    border-width: 2px 0 0 2px;
}
.login-container::after {
    bottom: -1px;
    right: -1px;
    border-width: 0 2px 2px 0;
}

/* --- Abstract Agency Emblem --- */
.agency-emblem {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 1.5rem;
}

.outer-ring {
    width: 60px;
    height: 60px;
    border: 2px dashed var(--border-color);
    border-radius: 50%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.inner-geometry {
    width: 34px;
    height: 34px;
    border: 2px solid var(--accent-amber);
    transform: rotate(45deg);
    box-shadow: 0 0 10px var(--glow-amber);
}

/* --- Typography & Headers --- */
.portal-header {
    text-align: center;
    margin-bottom: 2rem;
}

.portal-header h1 {
    font-size: 1.3rem;
    letter-spacing: 3px;
    color: var(--text-primary);
    font-weight: 700;
}

.classification-notice {
    font-size: 0.65rem;
    color: var(--accent-amber);
    letter-spacing: 1px;
    margin-top: 0.5rem;
    border: 1px solid rgba(255, 170, 0, 0.3);
    padding: 4px 8px;
    display: inline-block;
    background: var(--glow-amber);
}

/* --- Input Fields & Form Controls --- */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.input-group input {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.8rem 1rem;
    font-size: 0.9rem;
    letter-spacing: 1px;
    outline: none;
    transition: all 0.2s ease;
}

.input-group input:focus {
    border-color: var(--accent-amber);
    box-shadow: 0 0 10px var(--glow-amber);
}

/* --- Custom Checkbox --- */
.form-actions {
    display: flex;
    align-items: center;
}

.remember-device {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
}

.remember-device input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.custom-checkbox {
    width: 14px;
    height: 14px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-dark);
    display: inline-block;
    position: relative;
}

.remember-device input:checked ~ .custom-checkbox {
    border-color: var(--accent-amber);
    background-color: var(--glow-amber);
}

.remember-device input:checked ~ .custom-checkbox::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 5px;
    width: 3px;
    height: 6px;
    border: solid var(--accent-amber);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* --- Action Button --- */
.submit-btn {
    background-color: transparent;
    border: 1px solid var(--accent-amber);
    color: var(--accent-amber);
    padding: 1rem;
    font-size: 0.9rem;
    font-weight: bold;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 0.5rem;
}

.submit-btn:hover {
    background-color: var(--accent-amber);
    color: var(--bg-dark);
    box-shadow: 0 0 15px rgba(255, 170, 0, 0.4);
}

.submit-btn:active {
    transform: scale(0.99);
}

/* --- System Warnings Footer --- */
.portal-footer {
    margin-top: 2rem;
    border-top: 1px dashed var(--border-color);
    padding-top: 1rem;
    text-align: center;
}

.portal-footer p {
    font-size: 0.6rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 0.4rem;
}

.portal-footer p:first-child {
    color: var(--alert-red);
    font-weight: bold;
    letter-spacing: 0.5px;
}
/* --- Dynamic Error Display State --- */
.error-box {
    background-color: rgba(239, 68, 68, 0.1); /* Subtle transparent red fill */
    border: 1px solid var(--alert-red);
    color: var(--alert-red);
    padding: 0.8rem;
    font-size: 0.75rem;
    letter-spacing: 1px;
    text-align: center;
    margin-top: 1rem;
    position: relative;
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.2);
}

/* Red decorative brackets matching the container style */
.error-box::before {
    content: '[!]';
    font-weight: bold;
    margin-right: 6px;
}

.hidden {
    display: none !important;
}