.landing-container {
    position: relative;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background: #0a0a14;
    overflow: hidden;
}
#bg-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}
.landing-content {
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    padding: 20px;
}
.landing-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    color: white;
    margin: 0 0 10px 0;
    text-shadow: 0 0 30px rgba(102, 126, 234, 0.5);
    letter-spacing: -2px;
}
.landing-subtitle {
    font-size: clamp(1rem, 3vw, 1.4rem);
    color: rgba(255, 255, 255, 0.6);
    margin: 0 0 40px 0;
    font-weight: 300;
}
.btn-landing {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.4);
}
.btn-landing:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 50px rgba(102, 126, 234, 0.5);
}

.auth-card {
    position: relative;
    z-index: 10;
    background: rgba(20, 20, 35, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
    margin: auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.auth-title {
    color: white;
    font-size: 28px;
    font-weight: 600;
    text-align: center;
    margin: 0 0 30px 0;
}
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}
.auth-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.auth-field label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 13px;
    font-weight: 500;
}
.auth-field input {
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    color: white;
    font-size: 15px;
    transition: all 0.2s;
}
.auth-field input:focus {
    outline: none;
    border-color: #667eea;
    background: rgba(255, 255, 255, 0.1);
}
.auth-field input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}
.btn-auth {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 10px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 10px;
}
.btn-auth:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}
.btn-auth:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}
.auth-error {
    background: rgba(247, 32, 72, 0.2);
    border: 1px solid rgba(247, 32, 72, 0.3);
    color: #f72048;
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 14px;
    margin-bottom: 10px;
}
.auth-success {
    background: rgba(132, 245, 34, 0.2);
    border: 1px solid rgba(132, 245, 34, 0.3);
    color: #84f522;
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 14px;
    margin-bottom: 10px;
}
.auth-notice {
    background: rgba(255, 193, 7, 0.15);
    border: 1px solid rgba(255, 193, 7, 0.4);
    color: #ffc107;
    padding: 14px 18px;
    border-radius: 10px;
    font-size: 14px;
    margin-bottom: 16px;
    line-height: 1.5;
    text-align: center;
}
.auth-notice i {
    margin-right: 8px;
}
.auth-back {
    display: block;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: 14px;
    margin-top: 20px;
    transition: color 0.2s;
}
.auth-back:hover {
    color: white;
}