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

html {
    overflow-y: auto;
    overflow-x: hidden;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--gradient-bg);
    min-height: 100vh;
    color: var(--color-primary);
    position: relative;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--radial-gradient-1), var(--radial-gradient-2);
    animation: bgPulse 8s ease-in-out infinite;
    z-index: 0;
    pointer-events: none;
}

@keyframes bgPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

.lion-bg {
    position: fixed;
    width: 400px;
    height: 400px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.04;
    z-index: 0;
    pointer-events: none;
    animation: lionFloat 6s ease-in-out infinite;
}

.lion-bg svg {
    width: 100%;
    height: 100%;
    fill: var(--color-primary);
    filter: drop-shadow(0 0 20px var(--color-primary));
}

@keyframes lionFloat {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.05); }
}

.particles {
    position: fixed;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: float 15s infinite;
    opacity: 0.6;
}

@keyframes float {
    0% { transform: translateY(100vh) translateX(0); opacity: 0; }
    10% { opacity: 0.6; }
    90% { opacity: 0.6; }
    100% { transform: translateY(-100px) translateX(100px); opacity: 0; }
}

.container {
    position: relative;
    z-index: 2;
    background: var(--bg-card-alt);
    border: 3px solid var(--border-primary);
    border-radius: 20px;
    padding: 40px 35px;
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-primary), var(--shadow-secondary), var(--shadow-inset);
    backdrop-filter: blur(10px);
    margin: 20px auto;
}

.header {
    text-align: center;
    margin-bottom: 30px;
}

.shield-logo {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    position: relative;
    animation: logoFloat 3s ease-in-out infinite;
}

.shield-logo svg {
    width: 100%;
    height: 100%;
    fill: var(--color-primary);
    filter: drop-shadow(0 0 20px var(--color-primary)) drop-shadow(0 0 40px var(--color-primary));
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.title {
    font-size: 2em;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: var(--text-primary);
    font-weight: 700;
    text-shadow: 0 0 20px rgba(0, 217, 255, 0.6);
}

.subtitle {
    font-size: 0.9em;
    color: var(--color-primary);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 5px;
}

.security-badge {
    display: inline-block;
    background: var(--gradient-badge);
    border: 2px solid var(--border-primary);
    border-radius: 25px;
    padding: 8px 20px;
    margin-top: 15px;
    font-size: 0.8em;
    color: var(--color-primary);
    letter-spacing: 1px;
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
}

.welcome {
    text-align: center;
    font-size: 0.95em;
    margin-bottom: 25px;
    color: var(--text-primary);
    padding: 12px;
    background: var(--gradient-overlay);
    border-left: 4px solid var(--border-primary);
    border-radius: 5px;
}

.form-group {
    margin-bottom: 20px;
    position: relative;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.85em;
    letter-spacing: 1px;
    color: var(--color-primary);
    text-transform: uppercase;
    font-weight: 600;
}

label::before {
    content: '🔒 ';
    margin-right: 5px;
}

input {
    width: 100%;
    padding: 14px;
    background: var(--bg-input);
    border: 2px solid var(--border-secondary);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 0.95em;
    transition: all 0.3s;
}

input:focus {
    outline: none;
    border-color: var(--border-primary);
    box-shadow: 0 0 25px rgba(0, 217, 255, 0.4);
    background: var(--bg-input-focus);
}

input::placeholder {
    color: var(--text-placeholder);
}

.password-strength {
    margin-top: 8px;
    font-size: 0.85em;
    color: var(--color-primary);
    font-weight: 600;
}

.strength-bar {
    width: 100%;
    height: 6px;
    background: rgba(26, 31, 58, 0.8);
    border-radius: 3px;
    margin-top: 8px;
    overflow: hidden;
    border: 1px solid var(--border-tertiary);
}

.strength-fill {
    height: 100%;
    width: 0%;
    transition: all 0.4s;
    border-radius: 3px;
}

.strength-fill.weak { 
    width: 33%; 
    background: linear-gradient(90deg, var(--color-error), var(--color-error-light));
    box-shadow: 0 0 10px var(--color-error);
}

.strength-fill.medium { 
    width: 66%; 
    background: linear-gradient(90deg, var(--color-warning), var(--color-warning-light));
    box-shadow: 0 0 10px var(--color-warning);
}

.strength-fill.strong { 
    width: 100%; 
    background: linear-gradient(90deg, var(--color-success), var(--color-success-light));
    box-shadow: 0 0 10px var(--color-success);
}

.btn {
    width: 100%;
    padding: 16px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1.05em;
    font-weight: 700;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
    margin-top: 10px;
}

.btn::before {
    content: '🛡️';
    position: absolute;
    left: 20px;
    font-size: 1.2em;
    z-index: 1;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::after {
    width: 350px;
    height: 350px;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 217, 255, 0.6);
}

.btn:active {
    transform: translateY(-1px);
}

.toggle-form {
    text-align: center;
    margin-top: 20px;
    color: var(--text-tertiary);
    font-size: 0.9em;
}

.toggle-form a {
    color: var(--color-primary);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 600;
}

.toggle-form a:hover {
    color: var(--color-secondary);
    text-shadow: 0 0 10px var(--color-secondary);
}

.message {
    padding: 12px;
    margin-bottom: 20px;
    border-radius: 8px;
    text-align: center;
    font-size: 0.9em;
    display: none;
    font-weight: 600;
    border-left: 4px solid;
}

.message.error {
    background: rgba(255, 51, 102, 0.15);
    border-color: var(--color-error);
    color: var(--color-error-light);
}

.message.success {
    background: rgba(0, 255, 136, 0.15);
    border-color: var(--color-success);
    color: var(--color-success-light);
}

.hidden {
    display: none;
}

.requirements {
    font-size: 0.8em;
    color: var(--text-tertiary);
    margin-top: 10px;
    line-height: 1.6;
    padding: 12px;
    background: rgba(0, 217, 255, 0.05);
    border-left: 3px solid var(--border-tertiary);
    border-radius: 5px;
}

.requirements.invalid {
    color: var(--color-error-light);
    border-left-color: var(--color-error);
    background: rgba(255, 51, 102, 0.05);
}

.requirements.valid {
    color: var(--color-success-light);
    border-left-color: var(--color-success);
    background: rgba(0, 255, 136, 0.05);
}

.security-icons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
    font-size: 20px;
    opacity: 0.5;
}

.security-icons span {
    animation: iconFloat 3s ease-in-out infinite;
}

.security-icons span:nth-child(2) {
    animation-delay: 0.5s;
}

.security-icons span:nth-child(3) {
    animation-delay: 1s;
}

@keyframes iconFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 30px 25px;
        max-width: 95%;
    }

    .shield-logo {
        width: 90px;
        height: 90px;
    }

    .title {
        font-size: 1.6em;
        letter-spacing: 2px;
    }
    
    .subtitle {
        font-size: 0.8em;
    }

    .security-badge {
        font-size: 0.75em;
        padding: 6px 15px;
    }

    .lion-bg {
        width: 300px;
        height: 300px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 25px 20px;
    }

    .shield-logo {
        width: 70px;
        height: 70px;
        margin-bottom: 15px;
    }

    .title {
        font-size: 1.3em;
        letter-spacing: 1px;
    }
    
    .subtitle {
        font-size: 0.7em;
        letter-spacing: 1px;
    }

    .security-badge {
        font-size: 0.7em;
        padding: 6px 12px;
    }

    .welcome {
        font-size: 0.85em;
        padding: 10px;
    }

    input {
        padding: 12px;
        font-size: 0.9em;
    }

    .btn {
        padding: 14px;
        font-size: 0.95em;
    }

    .btn::before {
        font-size: 1em;
        left: 15px;
    }

    label {
        font-size: 0.8em;
    }

    .security-icons {
        font-size: 18px;
    }
}