:root {
    --color-bg-dark1: #0f0f23;
    --color-bg-dark2: #1a1a2e;
    --color-bg-dark3: #16213e;
    --color-building1: #1a1a2e;
    --color-building2: #2d2d4e;
    --color-window: #ffd700;
    --color-logo-gradient1: #ffd700;
    --color-logo-gradient2: #ffed4e;
    --color-text-main: #fff;
    --color-text-secondary: #a0a0c0;
    --color-border: rgba(255, 255, 255, 0.1);
    --color-card-bg: rgba(255, 255, 255, 0.05);
    --color-card-shadow: rgba(0, 0, 0, 0.3);
    --color-card-hover-shadow: rgba(0, 0, 0, 0.3);
    --color-input-bg: rgba(255, 255, 255, 0.08);
    --color-input-focus-bg: rgba(255, 255, 255, 0.12);
    --color-input-border: rgba(255, 255, 255, 0.1);
    --color-input-focus-border: #ffd700;
    --color-input-focus-shadow: rgba(255, 215, 0, 0.2);
    --color-placeholder: #8888aa;
    --color-accent: #ffd700;
    --color-accent-hover: #ffed4e;
    --color-error: #ff6b6b;
    --color-button-shadow: rgba(255, 215, 0, 0.3);
    --color-button-hover-shadow: rgba(255, 215, 0, 0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", system-ui, sans-serif;
}

body {
    background: linear-gradient(
        135deg,
        var(--color-bg-dark1) 0%,
        var(--color-bg-dark2) 50%,
        var(--color-bg-dark3) 100%
    );
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--color-text-main);
    overflow: hidden;
    position: relative;
}

.background-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.floating-building {
    position: absolute;
    bottom: 0;
    width: 120px;
    height: 300px;
    background: linear-gradient(
        to top,
        var(--color-building1) 0%,
        var(--color-building2) 100%
    );
    border-radius: 10px 10px 0 0;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
    animation: float 6s ease-in-out infinite;
}

.building-1 {
    left: 10%;
    height: 250px;
    animation-delay: 0s;
}

.building-2 {
    left: 25%;
    height: 320px;
    animation-delay: 1s;
}

.building-3 {
    right: 25%;
    height: 280px;
    animation-delay: 2s;
}

.building-4 {
    right: 10%;
    height: 200px;
    animation-delay: 3s;
}

.building-window {
    position: absolute;
    width: 15px;
    height: 20px;
    background: var(--color-window);
    border-radius: 2px;
    animation: window-light 4s infinite alternate;
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes window-light {
    0%,
    40% {
        opacity: 0.3;
    }

    60%,
    100% {
        opacity: 1;
    }
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 2rem;
    z-index: 10;
}

.logo {
    text-align: center;
    margin-bottom: 2rem;
}

.logo h1 {
    font-size: 2.8rem;
    font-weight: 700;
    background: linear-gradient(
        45deg,
        var(--color-logo-gradient1),
        var(--color-logo-gradient2)
    );
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 2px 10px rgba(255, 215, 0, 0.3);
    letter-spacing: 1px;
}

.logo p {
    color: var(--color-text-secondary);
    font-size: 1rem;
    margin-top: 0.5rem;
}

.login-card {
    background: var(--color-card-bg);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 10px 30px var(--color-card-shadow);
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease;
}

.login-card:hover {
    transform: translateY(-5px);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h2 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text-main);
}

.login-header p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #d0d0e0;
    font-size: 0.9rem;
    font-weight: 500;
}

.input-with-icon {
    position: relative;
}

.input-with-icon i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-accent);
    z-index: 1;
}

.form-control {
    width: 100%;
    padding: 15px 15px 15px 45px;
    background: var(--color-input-bg);
    border: 1px solid var(--color-input-border);
    border-radius: 12px;
    color: var(--color-text-main);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-input-focus-border);
    box-shadow: 0 0 0 2px var(--color-input-focus-shadow);
    background: var(--color-input-focus-bg);
}

.form-control::placeholder {
    color: var(--color-placeholder);
}

.options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.remember-me {
    display: flex;
    align-items: center;
}

.remember-me input {
    margin-right: 8px;
    accent-color: var(--color-accent);
}

.forgot-password {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: var(--color-accent-hover);
}

.kic-button {
    width: 100%;
    padding: 15px;
    background: linear-gradient(
        45deg,
        var(--color-logo-gradient1),
        var(--color-logo-gradient2)
    );
    border: none;
    border-radius: 12px;
    color: var(--color-bg-dark2);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--color-button-shadow);
}

.kic-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--color-button-hover-shadow);
}

.kic-button:active {
    transform: translateY(0);
}

.signup-link {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.signup-link a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.signup-link a:hover {
    color: var(--color-accent-hover);
}

.error-message {
    color: var(--color-error);
    font-size: 0.85rem;
    margin-top: 5px;
    display: block;
}

/* Responsive adjustments */
@media (max-width: 480px) {
    .login-container {
        padding: 1rem;
    }

    .login-card {
        padding: 2rem 1.5rem;
    }

    .logo h1 {
        font-size: 2.2rem;
    }
}