* {
    -webkit-tap-highlight-color: transparent;
    box-sizing: border-box;
}

body {
    background-color: #f0f2f5;
    font-family: 'Segoe UI', sans-serif;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 0;
}

.app-wrapper {
    width: 100%;
    max-width: 420px;
    min-height: 100dvh;
    background: #ffffff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 40px 28px;
    position: relative;
    overflow: hidden;
}

/* Decorative bubbles */
.app-wrapper::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 220px;
    height: 220px;
    background: #3B82F620;
    border-radius: 50%;
    pointer-events: none;
}

.app-wrapper::after {
    content: '';
    position: absolute;
    bottom: -60px;
    left: -60px;
    width: 180px;
    height: 180px;
    background: #3B82F610;
    border-radius: 50%;
    pointer-events: none;
}

/* Logo */
.app-logo {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #1D4ED8, #3B82F6);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    box-shadow: 0 8px 24px #3B82F630;
    position: relative;
    z-index: 1;
}

.app-logo i {
    font-size: 28px;
    color: #fff;
}

h1 {
    font-size: 26px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 6px;
    position: relative;
    z-index: 1;
}

.subtitle {
    font-size: 14px;
    color: #9094a3;
    margin-bottom: 32px;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* Alert */
.alert {
    border: none;
    border-radius: 12px;
    font-size: 13px;
    padding: 12px 16px;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.alert-danger {
    background: #fff0f0;
    color: #e53e3e;
}

.alert-success {
    background: #f0fff4;
    color: #276749;
}

/* Feature List */
.feat-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 32px;
    position: relative;
    z-index: 1;
}

.feat-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background: #F8FAFF;
    border-radius: 12px;
    border: 1.5px solid #E8EEFF;
}

.feat-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, #1D4ED8, #3B82F6);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feat-icon i {
    font-size: 17px;
    color: #fff;
}

.feat-text p {
    font-size: 13px;
    font-weight: 600;
    color: #1a1a2e;
    margin: 0;
}

.feat-text span {
    font-size: 12px;
    color: #9094a3;
}

/* Divider */
.divider {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #c0c0d0;
    font-size: 13px;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: #e8e8f0;
}

/* Google Button */
.btn-google {
    width: 100%;
    border: 1.5px solid #e8e8f0;
    border-radius: 12px;
    padding: 14px;
    font-size: 15px;
    font-weight: 600;
    color: #4a4a6a;
    background: #fff;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    text-decoration: none;
    position: relative;
    z-index: 1;
}

.btn-google:hover {
    background: #F8F8FF;
    border-color: #c0c0d0;
    color: #4a4a6a;
}

.btn-google:active {
    transform: scale(0.98);
}

/* Trust Row */
.trust-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 16px;
    position: relative;
    z-index: 1;
}

.trust-row i {
    font-size: 14px;
    color: #3B82F6;
}

.trust-row span {
    font-size: 12px;
    color: #9094a3;
}

/* Footer */
.footer-note {
    text-align: center;
    font-size: 11px;
    color: #c0c0d0;
    margin-top: 24px;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* Desktop */
@media (min-width: 480px) {
    body {
        padding: 20px;
    }

    .app-wrapper {
        border-radius: 24px;
        min-height: auto;
        box-shadow: 0 20px 60px #00000015;
    }
}