/*--------------------------------------------------------------
# Firebase Session Button - Floating, Self-Contained
--------------------------------------------------------------*/

/* Floating Button Container */
.firebase-session-button {
    position: fixed;
    z-index: 9999 !important;
    transition: all 0.3s ease;
}

/* Base Button Styles */
.session-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    white-space: nowrap;
}

.session-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

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

/* Icon Styles */
.session-btn i {
    font-size: 20px;
    line-height: 1;
    color: inherit;
    display: inline-block;
}

/* Login Button (Not Authenticated) */
.session-btn-login {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
}

.session-btn-login:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

/* Logout Button (Authenticated) */
.session-btn-logout {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: #ffffff;
}

.session-btn-logout:hover {
    background: linear-gradient(135deg, #f5576c 0%, #f093fb 100%);
}

/* Text Label (hidden on mobile) */
.session-btn-text {
    display: none;
}

@media (min-width: 768px) {
    .session-btn-text {
        display: inline;
    }
}

/* Mobile: Icon Only */
@media (max-width: 767px) {
    .session-btn {
        width: 56px;
        height: 56px;
        padding: 0;
        justify-content: center;
        align-items: center;
        border-radius: 50%;
    }

    .session-btn i {
        font-size: 26px;
        color: #ffffff !important;
        display: block;
    }

    .session-btn-text {
        display: none !important;
    }
}

/* Pulse Animation (optional) */
@keyframes pulse {
    0% {
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }
    50% {
        box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4), 0 0 0 8px rgba(102, 126, 234, 0.1);
    }
    100% {
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }
}

.session-btn-login {
    animation: pulse 2s infinite;
}

/* Loading State */
.session-btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.session-btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid #ffffff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Tooltip (optional) */
.session-btn[title]:hover::before {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 8px;
    padding: 6px 12px;
    background: rgba(0, 0, 0, 0.8);
    color: #ffffff;
    font-size: 12px;
    font-weight: normal;
    white-space: nowrap;
    border-radius: 4px;
    pointer-events: none;
}

/* Position Variants */
.firebase-session-button[data-position="bottom-right"] {
    /* Default: bottom-right already set via inline styles */
}

.firebase-session-button[data-position="bottom-left"] {
    bottom: var(--session-btn-bottom, 30px);
    left: var(--session-btn-left, 30px);
    right: auto;
}

.firebase-session-button[data-position="top-right"] {
    top: var(--session-btn-top, 30px);
    right: var(--session-btn-right, 30px);
    bottom: auto;
}

.firebase-session-button[data-position="top-left"] {
    top: var(--session-btn-top, 30px);
    left: var(--session-btn-left, 30px);
    bottom: auto;
    right: auto;
}