/* VER: 1.0 - 2026-04-03 - iOS-style authentication UI with glassmorphism */

/* ============================================
   RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "San Francisco", "Segoe UI", Roboto, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
}

/* ============================================
   LOGIN CONTAINER
   ============================================ */
.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

/* ============================================
   GLASSMORPHISM CARD
   ============================================ */
.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1),
        0 2px 8px rgba(0, 0, 0, 0.05);
    padding: 48px 40px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* ============================================
   LOGO & HEADER
   ============================================ */
.login-header {
    text-align: center;
    margin-bottom: 36px;
}

.login-logo {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: white;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.login-title {
    font-size: 28px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.login-subtitle {
    font-size: 15px;
    color: #666;
    font-weight: 400;
}

/* ============================================
   FORM ELEMENTS
   ============================================ */
.login-form {
    width: 100%;
}

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

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #333;
    margin-bottom: 8px;
    letter-spacing: -0.2px;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.8);
    color: #1a1a1a;
    transition: all 0.2s ease;
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: #667eea;
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.form-input::placeholder {
    color: #999;
}

/* ============================================
   BUTTON
   ============================================ */
.btn-primary {
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    margin-top: 8px;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

/* ============================================
   ERROR & SUCCESS MESSAGES
   ============================================ */
.alert {
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 14px;
    margin-bottom: 20px;
    border: 1px solid transparent;
}

.alert-error {
    background: rgba(255, 59, 48, 0.1);
    color: #ff3b30;
    border-color: rgba(255, 59, 48, 0.2);
}

.alert-success {
    background: rgba(52, 199, 89, 0.1);
    color: #34c759;
    border-color: rgba(52, 199, 89, 0.2);
}

/* ============================================
   FOOTER
   ============================================ */
.login-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   LANGUAGE SWITCHER (LOGIN PAGE - iOS Toggle)
   ============================================ */
.language-switcher-login {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 4px;
    gap: 4px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1),
        inset 0 1px 3px rgba(255, 255, 255, 0.2);
}

.language-switcher-login .lang-option {
    position: relative;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.7);
    cursor: pointer;
    border-radius: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
    user-select: none;
    -webkit-user-select: none;
}

.language-switcher-login .lang-option:hover:not(.active) {
    color: rgba(255, 255, 255, 0.9);
}

.language-switcher-login .lang-option.active {
    color: #667eea;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15),
        0 1px 3px rgba(0, 0, 0, 0.1);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 480px) {
    .login-card {
        padding: 36px 28px;
        border-radius: 16px;
    }

    .login-title {
        font-size: 24px;
    }

    .login-logo {
        width: 64px;
        height: 64px;
        font-size: 28px;
    }
}