/* Loading Screen - Startup Progress */
#startup-loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    opacity: 1;
    transition: opacity 0.5s ease-out;
}

#startup-loading-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loading-content {
    text-align: center;
    max-width: 500px;
    padding: 40px;
}

.loading-logo {
    width: 200px;
    height: 200px;
    margin: 0 auto 40px;
    animation: pulse-logo 2s ease-in-out infinite;
}

.loading-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 0 30px rgba(59, 130, 246, 0.6));
}

@keyframes pulse-logo {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 0 20px rgba(59, 130, 246, 0.5));
    }
    50% {
        transform: scale(1.05);
        filter: drop-shadow(0 0 30px rgba(59, 130, 246, 0.8));
    }
}

.loading-title {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
    font-family: 'Inter', sans-serif;
}

.loading-subtitle {
    font-size: 14px;
    color: #94a3b8;
    margin-bottom: 40px;
}

.loading-progress-container {
    width: 100%;
    margin-bottom: 20px;
}

.loading-progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(148, 163, 184, 0.2);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

.loading-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #3b82f6 0%, #8b5cf6 100%);
    border-radius: 3px;
    width: 0%;
    transition: width 0.3s ease-out;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

.loading-progress-text {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
}

.loading-phase {
    font-size: 13px;
    color: #e2e8f0;
    font-weight: 500;
}

.loading-percentage {
    font-size: 13px;
    color: #3b82f6;
    font-weight: 600;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    margin: 20px auto 0;
    border: 3px solid rgba(148, 163, 184, 0.2);
    border-top-color: #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-details {
    margin-top: 15px;
    font-size: 12px;
    color: #64748b;
    min-height: 18px;
}

/* Responsive - Mobile Optimized */
@media (max-width: 768px) {
    #startup-loading-screen {
        background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
        padding: 0;
    }

    .loading-content {
        padding: 20px 16px;
        max-width: 100%;
        width: 100%;
    }

    .loading-logo {
        width: 120px !important;
        height: 120px !important;
        margin: 0 auto 24px !important;
    }

    .loading-title {
        font-size: 22px !important;
        margin-bottom: 8px !important;
        line-height: 1.3 !important;
    }

    .loading-subtitle {
        font-size: 13px !important;
        margin-bottom: 32px !important;
        opacity: 0.9;
    }

    .loading-progress-container {
        width: 100% !important;
        padding: 0 4px;
    }

    .loading-progress-bar {
        height: 5px !important;
    }

    .loading-progress-text {
        margin-top: 10px !important;
        font-size: 12px !important;
    }

    .loading-phase {
        font-size: 12px !important;
    }

    .loading-percentage {
        font-size: 12px !important;
    }

    .loading-details {
        font-size: 11px !important;
        margin-top: 12px !important;
        padding: 0 4px;
        line-height: 1.4;
    }

    .loading-spinner {
        width: 32px !important;
        height: 32px !important;
        margin: 16px auto 0 !important;
    }
}

/* Very small mobile devices */
@media (max-width: 390px) {
    .loading-logo {
        width: 100px !important;
        height: 100px !important;
        margin: 0 auto 20px !important;
    }

    .loading-title {
        font-size: 20px !important;
    }

    .loading-subtitle {
        font-size: 12px !important;
    }

    .loading-content {
        padding: 16px 12px;
    }
}