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

body {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    min-height: 100vh;
    min-height: -webkit-fill-available;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

/* Language Switcher */
.language-switcher {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 1000;
    display: flex;
    gap: 8px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 6px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.lang-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.85);
    cursor: pointer;
    border-radius: 18px;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
}

.lang-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.lang-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.15);
}

html {
    height: -webkit-fill-available;
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    padding: 40px 32px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

.logo-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    font-weight: bold;
    color: white;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.4);
}

h1 {
    font-size: 26px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 8px;
}

.subtitle {
    text-align: center;
    color: #94a3b8;
    font-size: 15px;
    margin-bottom: 32px;
}

.input-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: #cbd5e1;
}

input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    color: white;
    font-size: 16px;
    outline: none;
    transition: all 0.2s ease;
}

input:focus {
    border-color: #3b82f6;
    background: rgba(59, 130, 246, 0.1);
}

input::placeholder {
    color: #64748b;
}

.error-message {
    display: none;
    padding: 12px 16px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 12px;
    color: #fca5a5;
    font-size: 14px;
    margin-bottom: 20px;
}

.error-message.show {
    display: block;
}

.login-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.login-btn:active {
    transform: translateY(0);
}

/* Mobile optimization */
@media (max-width: 768px) {
    .login-container {
        padding: 16px;
    }

    .login-card {
        padding: 32px 24px;
    }

    .logo-icon {
        width: 70px;
        height: 70px;
        font-size: 42px;
    }

    h1 {
        font-size: 24px;
    }
}

/* Prevent zoom on input focus on iOS */
@media screen and (max-width: 768px) {
    input {
        font-size: 16px;
    }
}

/* Safe area for notched devices */
@supports (padding: max(0px)) {
    body {
        padding-left: max(0px, env(safe-area-inset-left));
        padding-right: max(0px, env(safe-area-inset-right));
    }
}