/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Courier New', monospace;
    background: #000;
    color: #0ff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: auto;
    position: relative;
}

/* Animated Background Grid */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(0deg, transparent 24%, rgba(0, 255, 255, 0.05) 25%, rgba(0, 255, 255, 0.05) 26%, transparent 27%, transparent 74%, rgba(0, 255, 255, 0.05) 75%, rgba(0, 255, 255, 0.05) 76%, transparent 77%, transparent),
        linear-gradient(90deg, transparent 24%, rgba(0, 255, 255, 0.05) 25%, rgba(0, 255, 255, 0.05) 26%, transparent 27%, transparent 74%, rgba(0, 255, 255, 0.05) 75%, rgba(0, 255, 255, 0.05) 76%, transparent 77%, transparent);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
    animation: gridScroll 8s linear infinite;
}

@keyframes gridScroll {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(50px);
    }
}

/* Blurred Overlay with Cyber Gradient */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0e27 0%, #1a0033 50%, #0a1a1a 100%);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 1;
    pointer-events: none;
}

/* Cyber Scanning Lines */
.overlay::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(0deg, transparent 0%, rgba(0, 255, 255, 0.03) 50%, transparent 100%);
    pointer-events: none;
    animation: scan 8s linear infinite;
}

@keyframes scan {
    0% {
        transform: translateY(-100%);
    }
    100% {
        transform: translateY(100%);
    }
}

/* Login Container with Cyber Frame */
.login-container {
    position: relative;
    z-index: 2;
    background: rgba(10, 14, 39, 0.95);
    padding: 40px;
    border-radius: 0;
    width: 90%;
    max-width: 450px;
    text-align: center;
    box-shadow: 
        0 0 30px rgba(0, 255, 255, 0.3),
        0 0 60px rgba(0, 255, 255, 0.1),
        inset 0 0 30px rgba(0, 255, 255, 0.05);
    margin: 20px;
    border: 2px solid rgba(0, 255, 255, 0.2);
    animation: containerGlow 3s ease-in-out infinite;
}

@keyframes containerGlow {
    0%, 100% {
        box-shadow: 
            0 0 30px rgba(0, 255, 255, 0.3),
            0 0 60px rgba(0, 255, 255, 0.1),
            inset 0 0 30px rgba(0, 255, 255, 0.05);
        border-color: rgba(0, 255, 255, 0.2);
    }
    50% {
        box-shadow: 
            0 0 40px rgba(0, 255, 255, 0.5),
            0 0 80px rgba(0, 255, 255, 0.2),
            inset 0 0 40px rgba(0, 255, 255, 0.1);
        border-color: rgba(0, 255, 255, 0.4);
    }
}

/* Cyber Corner Brackets */
.login-container::before,
.login-container::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid #0ff;
}

.login-container::before {
    top: -10px;
    left: -10px;
    border-right: none;
    border-bottom: none;
}

.login-container::after {
    top: -10px;
    right: -10px;
    border-left: none;
    border-bottom: none;
}

/* Title */
.login-container h1 {
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    color: #0ff;
    margin-bottom: 8px;
    font-weight: 900;
    letter-spacing: 3px;
    text-shadow: 
        0 0 10px #0ff,
        0 0 20px #0ff,
        0 0 30px rgba(0, 255, 255, 0.5);
    animation: titlePulse 2s ease-in-out infinite;
}

@keyframes titlePulse {
    0%, 100% {
        text-shadow: 
            0 0 10px #0ff,
            0 0 20px #0ff,
            0 0 30px rgba(0, 255, 255, 0.5);
    }
    50% {
        text-shadow: 
            0 0 20px #0ff,
            0 0 40px #0ff,
            0 0 60px rgba(0, 255, 255, 0.8);
    }
}

/* Subtitle */
.subtitle {
    font-size: clamp(0.8rem, 2vw, 1rem);
    color: #00ffcc;
    margin-bottom: 30px;
    font-weight: 300;
    letter-spacing: 1px;
    text-shadow: 0 0 10px rgba(0, 255, 204, 0.5);
}

/* Input Group */
.input-group {
    margin-bottom: 25px;
    text-align: left;
    position: relative;
}

.input-group label {
    display: block;
    font-size: clamp(0.85rem, 2vw, 1rem);
    color: #0ff;
    margin-bottom: 10px;
    font-weight: 600;
    letter-spacing: 1px;
    text-shadow: 0 0 5px rgba(0, 255, 255, 0.5);
}

.input-group small {
    display: block;
    color: rgba(0, 255, 255, 0.6);
    font-size: 0.75rem;
    margin-top: 5px;
}

/* Input Wrapper with Icon */
.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper i {
    position: absolute;
    left: 15px;
    color: #0ff;
    font-size: 1.1rem;
    text-shadow: 0 0 10px #0ff;
    z-index: 3;
}

.input-wrapper input {
    width: 100%;
    padding: 14px 15px 14px 45px;
    border: 2px solid rgba(0, 255, 255, 0.3);
    border-radius: 2px;
    background: rgba(10, 20, 40, 0.8);
    color: #0ff;
    font-size: clamp(0.9rem, 2vw, 1rem);
    font-family: 'Courier New', monospace;
    transition: all 0.3s ease;
    box-shadow: 
        inset 0 0 10px rgba(0, 255, 255, 0.1),
        0 0 10px rgba(0, 255, 255, 0.1);
}

.input-wrapper input:focus {
    border-color: #0ff;
    box-shadow: 
        inset 0 0 10px rgba(0, 255, 255, 0.2),
        0 0 20px rgba(0, 255, 255, 0.4),
        0 0 40px rgba(0, 255, 255, 0.2);
    outline: none;
    background: rgba(10, 20, 40, 0.95);
}

.input-wrapper input::placeholder {
    color: rgba(0, 255, 255, 0.4);
}

/* Log In Button with Cyber Effect */
.login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 14px;
    background: linear-gradient(90deg, rgba(0, 255, 255, 0.1), rgba(0, 255, 200, 0.1));
    border: 2px solid #0ff;
    border-radius: 2px;
    color: #0ff;
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-shadow: 0 0 10px #0ff;
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
    z-index: 1;
}

.login-btn:hover {
    box-shadow: 
        0 0 20px #0ff,
        0 0 40px rgba(0, 255, 255, 0.5),
        inset 0 0 20px rgba(0, 255, 255, 0.1);
    border-color: #00ffff;
    background: linear-gradient(90deg, rgba(0, 255, 255, 0.2), rgba(0, 255, 200, 0.2));
}

.login-btn:hover::before {
    left: 100%;
}

.login-btn i {
    margin-left: 8px;
    font-size: 1rem;
    z-index: 2;
}

.login-btn span {
    z-index: 2;
    position: relative;
}

.login-btn:active {
    transform: scale(0.98);
    box-shadow: 
        0 0 10px #0ff,
        inset 0 0 20px rgba(0, 255, 255, 0.2);
}

/* Paste Button */
.paste-btn {
    background: rgba(0, 255, 255, 0.05);
    border: 1px solid rgba(0, 255, 255, 0.3);
    padding: 6px 12px;
    border-radius: 2px;
    cursor: pointer;
    font-size: clamp(0.75rem, 1.5vw, 0.85rem);
    margin-top: 8px;
    color: #0ff;
    transition: all 0.3s ease;
    font-family: 'Courier New', monospace;
}

.paste-btn:hover {
    background: rgba(0, 255, 255, 0.1);
    border-color: #0ff;
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.3);
}

/* Link Text */
.link-text {
    font-size: clamp(0.8rem, 2vw, 0.95rem);
    margin: 25px 0;
    color: rgba(0, 255, 255, 0.6);
    letter-spacing: 1px;
}

.link-text a {
    color: #00ff99;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    text-shadow: 0 0 5px rgba(0, 255, 153, 0.5);
    position: relative;
}

.link-text a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -2px;
    left: 0;
    background: #00ff99;
    transition: width 0.3s ease;
    box-shadow: 0 0 5px #00ff99;
}

.link-text a:hover {
    color: #00ffff;
    text-shadow: 0 0 15px rgba(0, 255, 255, 0.8);
}

.link-text a:hover::after {
    width: 100%;
}

/* Info Box */
.info-box {
    background: rgba(0, 50, 50, 0.3);
    padding: 20px;
    border-radius: 2px;
    font-size: clamp(0.75rem, 1.5vw, 0.9rem);
    line-height: 1.6;
    text-align: left;
    margin-top: 25px;
    border-left: 3px solid #0ff;
    border-top: 1px solid rgba(0, 255, 255, 0.2);
    border-bottom: 1px solid rgba(0, 255, 255, 0.2);
    box-shadow: 
        inset 0 0 15px rgba(0, 255, 255, 0.05),
        0 0 15px rgba(0, 255, 255, 0.1);
    position: relative;
}

.info-box::before {
    content: '> ';
    color: #0ff;
    font-weight: 900;
}

.info-box p {
    margin: 10px 0;
    color: rgba(0, 255, 200, 0.8);
    text-shadow: 0 0 5px rgba(0, 255, 255, 0.3);
}

/* Error Message */
.error-message {
    background: rgba(255, 20, 70, 0.1);
    border: 1px solid rgba(255, 20, 70, 0.5);
    color: #ff3366;
    padding: 15px;
    border-radius: 2px;
    margin-top: 20px;
    text-shadow: 0 0 5px rgba(255, 20, 70, 0.5);
    font-size: clamp(0.8rem, 2vw, 0.95rem);
    box-shadow: 0 0 15px rgba(255, 20, 70, 0.2);
}

/* Mobile - Extra Small (320px - 376px) */
@media (max-width: 376px) {
    body {
        padding: 10px;
    }

    .login-container {
        padding: 25px;
        max-width: calc(100vw - 20px);
    }

    .input-wrapper input {
        padding: 12px 12px 12px 35px;
    }

    .login-btn {
        padding: 12px;
    }

    .info-box {
        padding: 15px;
        margin-top: 20px;
    }
}

/* Mobile - Small (377px - 480px) */
@media (min-width: 377px) and (max-width: 480px) {
    body {
        padding: 15px;
    }

    .login-container {
        padding: 30px;
    }

    .input-wrapper input {
        padding: 12px 15px 12px 40px;
    }
}

/* Mobile - Medium (481px - 600px) */
@media (min-width: 481px) and (max-width: 600px) {
    body {
        padding: 20px;
    }

    .login-container {
        padding: 35px;
    }
}

/* Tablet (601px - 768px) */
@media (min-width: 601px) and (max-width: 768px) {
    .login-container {
        padding: 40px;
        max-width: 500px;
    }
}

/* Tablet Large (769px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .login-container {
        padding: 45px;
        max-width: 520px;
    }
}

/* Desktop (1025px and above) */
@media (min-width: 1025px) {
    .login-container {
        padding: 50px;
        max-width: 550px;
    }

    .login-container:hover {
        box-shadow: 
            0 0 50px rgba(0, 255, 255, 0.4),
            0 0 100px rgba(0, 255, 255, 0.2),
            inset 0 0 40px rgba(0, 255, 255, 0.1);
    }
}

/* Large Desktop (1400px and above) */
@media (min-width: 1400px) {
    .login-container {
        padding: 55px;
        max-width: 600px;
    }
}

/* Ultra Wide (1921px and above) */
@media (min-width: 1921px) {
    .login-container {
        padding: 60px;
        max-width: 650px;
    }

    .login-container h1 {
        font-size: 3rem;
    }
}

/* Landscape Orientation Small Height */
@media (max-height: 500px) {
    body {
        min-height: auto;
        padding: 20px 0;
    }

    .login-container {
        padding: 25px;
    }

    .input-group {
        margin-bottom: 15px;
    }

    .info-box {
        display: none;
    }
}

/* Print Styles */
@media print {
    body::before,
    .overlay,
    .overlay::after {
        display: none;
    }

    .login-container {
        box-shadow: none;
        border: 1px solid #000;
    }
}

/* Retina Display Optimization */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .login-container {
        box-shadow: 
            0 0 30px rgba(0, 255, 255, 0.3),
            0 0 60px rgba(0, 255, 255, 0.1),
            inset 0 0 30px rgba(0, 255, 255, 0.05);
    }

    .login-container h1 {
        text-shadow: 
            0 0 10px #0ff,
            0 0 20px #0ff,
            0 0 30px rgba(0, 255, 255, 0.5);
    }
}

/* Touch Device Optimization */
@media (hover: none) and (pointer: coarse) {
    .login-btn {
        padding: 16px;
    }

    .input-wrapper input {
        font-size: 16px;
        padding: 14px 15px 14px 45px;
    }

    .login-btn:active {
        transform: scale(0.98);
    }
}