/* ==========================================================================
   rcd800.dev - Login Gateway Stylesheet
   Premium Glassmorphic Developer Lab Theme - Crimson (#760024)
   ========================================================================== */

:root {
    --theme-crimson: 342;
    --primary-hue: var(--theme-crimson);
    --accent-hue: calc(var(--primary-hue) - 15);
    
    --color-primary: hsl(var(--primary-hue), 100%, 23%);
    --color-primary-glow: hsla(var(--primary-hue), 100%, 23%, 0.4);
    
    --color-accent: hsl(var(--primary-hue), 100%, 38%);
    --color-accent-glow: hsla(var(--primary-hue), 100%, 38%, 0.25);
    --color-text-highlight: hsl(var(--primary-hue), 100%, 65%);
    
    --color-bg-dark: hsl(340, 15%, 4%);
    --color-bg-panel: hsla(340, 15%, 7%, 0.75);
    --color-border: hsla(0, 0%, 100%, 0.06);
    --color-border-hover: hsla(var(--primary-hue), 100%, 45%, 0.3);
    
    --text-main: hsl(340, 5%, 85%);
    --text-muted: hsl(340, 5%, 62%);
    --text-bright: hsl(0, 0%, 100%);
    
    --glow-spread: 15px;
    --glow-color: hsla(var(--primary-hue), 100%, 35%, 0.18);
    --glow-shadow: 0 0 var(--glow-spread) var(--glow-color);

    --font-heading: 'Space Grotesk', system-ui, -apple-system, sans-serif;
    --font-body: 'Outfit', system-ui, -apple-system, sans-serif;
    
    --border-radius-lg: 24px;
    --border-radius-md: 16px;
    --border-radius-sm: 10px;
    
    --transition-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base resets & document settings */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--color-bg-dark);
    color: var(--text-main);
    font-family: var(--font-body);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    padding: 1.5rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Subtle background grid pattern overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(hsla(var(--primary-hue), 100%, 23%, 0.08) 1px, transparent 1px),
        radial-gradient(hsla(var(--primary-hue), 100%, 23%, 0.05) 1.5px, transparent 1.5px);
    background-size: 24px 24px, 48px 48px;
    z-index: -2;
    pointer-events: none;
}

/* Interactive cursor glow tracking element */
.mouse-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, hsla(var(--primary-hue), 100%, 25%, 0.12) 0%, transparent 70%);
    z-index: -1;
    pointer-events: none;
    transform: translate(-50%, -50%);
    transition: transform 0.2s cubic-bezier(0.1, 0.8, 0.3, 1);
    will-change: transform;
}

.blob {
    position: fixed;
    border-radius: 50%;
    filter: blur(140px);
    z-index: -2;
    opacity: 0.3;
    pointer-events: none;
    animation: blob-float 22s infinite ease-in-out alternate;
    will-change: transform;
}

.blob-purple {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, hsla(var(--primary-hue), 100%, 23%, 0.85) 0%, transparent 80%);
    top: -150px;
    left: -150px;
}

.blob-blue {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, hsla(var(--accent-hue), 100%, 35%, 0.7) 0%, transparent 80%);
    bottom: -150px;
    right: -100px;
    animation-delay: -7s;
}

.blob-emerald {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, hsla(var(--primary-hue), 100%, 45%, 0.4) 0%, transparent 80%);
    top: 35%;
    left: 40%;
    animation-delay: -14s;
}

@keyframes blob-float {
    0% { transform: translate(0px, 0px) scale(1) rotate(0deg); }
    53% { transform: translate(60px, -80px) scale(1.15) rotate(120deg); }
    66% { transform: translate(-50px, 40px) scale(0.9) rotate(240deg); }
    100% { transform: translate(0px, 0px) scale(1) rotate(360deg); }
}

/* ==========================================================================
   Login Container & Card
   ========================================================================== */

.login-container {
    width: 100%;
    max-width: 440px;
    z-index: 1;
}

@keyframes cardEntrance {
    from {
        opacity: 0;
        transform: translate3d(0, 30px, 0) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0) scale(1);
    }
}

.login-card {
    background: var(--color-bg-panel);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 3rem 2.5rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), var(--glow-shadow);
    transition: var(--transition-smooth);
    animation: cardEntrance 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
    will-change: transform, opacity;
}

.login-card:hover {
    border-color: var(--color-border-hover);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7), 0 0 calc(var(--glow-spread) + 5px) var(--glow-color);
}

.login-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: 2.2rem;
}

.security-shield {
    position: relative;
    width: 72px;
    height: 72px;
    margin-bottom: 1.2rem;
}

.shield-glow {
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), var(--color-text-highlight));
    filter: blur(6px);
    opacity: 0.6;
    animation: pulse-glow 3s infinite alternate;
}

.shield-inner {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: hsl(340, 15%, 5%);
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.shield-inner i {
    font-size: 1.8rem;
    background: linear-gradient(135deg, var(--color-text-highlight), var(--color-accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

@keyframes pulse-glow {
    0% { opacity: 0.4; filter: blur(5px) scale(0.96); }
    100% { opacity: 0.8; filter: blur(8px) scale(1.04); }
}

.title-primary {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--text-bright);
    letter-spacing: -0.5px;
    margin-bottom: 0.3rem;
}

.subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Form Fields
   ========================================================================== */

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.error-banner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: hsla(342, 100%, 23%, 0.15);
    border: 1px solid hsla(342, 100%, 38%, 0.4);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem 1rem;
    font-size: 0.85rem;
    color: hsl(342, 100%, 65%);
    animation: shake 0.4s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}

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

.input-label {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.input-wrapper input {
    width: 100%;
    padding: 0.8rem 1rem 0.8rem 2.6rem;
    background: hsla(0, 0%, 100%, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--text-bright);
    font-family: var(--font-body);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-fast);
}

.input-wrapper input:focus {
    border-color: hsla(var(--primary-hue), 100%, 45%, 0.5);
    background: hsla(0, 0%, 100%, 0.05);
    box-shadow: 0 0 12px hsla(var(--primary-hue), 100%, 38%, 0.2);
}

.input-wrapper input:focus + .input-icon,
.input-wrapper input:not(:placeholder-shown) + .input-icon {
    color: var(--color-text-highlight);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.85rem 1.5rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    outline: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    border: 1px solid transparent;
    width: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
    color: var(--text-bright);
    box-shadow: 0 4px 16px hsla(var(--primary-hue), 100%, 25%, 0.4);
}

.btn-primary:hover:not(:disabled) {
    filter: brightness(1.15);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px hsla(var(--primary-hue), 100%, 25%, 0.55);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.login-footer {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
}

.btn-back-home {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.btn-back-home:hover {
    color: var(--text-bright);
    transform: translateX(-2px);
}

.btn-back-home i {
    transition: var(--transition-fast);
}

.btn-back-home:hover i {
    transform: translateX(-2px);
}