/* ============================================================
   QUICK START - ZERO-FRICTION UPLOAD FOR NON-ANALYSTS
   Prominent, attractive, minimal friction design
   ============================================================ */

#quick-start-section {
    margin-top: 12px;
}

#quick-start-section .title {
    color: #cfe5ff;
    font-size: 32px;
    margin-bottom: 8px;
    animation: fadeInDown 0.6s ease;
}

#quick-start-section .subtitle {
    color: #94a3b8;
    font-size: 15px;
    margin-bottom: 28px;
    animation: fadeInDown 0.6s ease 0.1s backwards;
}

/* Upload Drop Zone */
#upload-drop-zone {
    animation: fadeInUp 0.6s ease 0.2s backwards;
}

#upload-drop-zone:hover {
    border-color: #667eea !important;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.25), rgba(165, 94, 234, 0.25)) !important;
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.2);
}

#upload-drop-zone h2 {
    background: linear-gradient(90deg, #667eea, #a55eea);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

#quick-upload-btn {
    position: relative;
    overflow: hidden;
}

#quick-upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.5) !important;
}

#quick-upload-btn:active {
    transform: translateY(0);
}

/* File Preview Text */
#file-preview {
    animation: slideDown 0.3s ease;
}

/* Quick Action Buttons */
#quick-analyze-btn {
    animation: slideUp 0.4s ease 0.3s backwards;
}

#quick-analyze-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 230, 118, 0.3) !important;
}

#quick-analyze-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

#demo-btn {
    animation: slideUp 0.4s ease 0.4s backwards;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#demo-btn:hover {
    background: rgba(102, 126, 234, 0.15) !important;
    color: #667eea !important;
    transform: translateY(-2px);
}

#demo-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Dashboard Content (Hidden initially) */
#dashboard-content {
    animation: fadeIn 0.5s ease;
}

#dashboard-content .title {
    font-size: 28px;
    margin-bottom: 6px;
}

#dashboard-content .subtitle {
    font-size: 14px;
    margin-bottom: 24px;
}

/* Metrics Section Styling */
#metrics-section {
    margin-top: 24px;
    animation: fadeInUp 0.6s ease 0.2s backwards;
}

/* Empty State with Call-to-Action */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    border-radius: 12px;
    background: rgba(102, 126, 234, 0.05);
    border: 2px dashed rgba(102, 126, 234, 0.3);
}

.empty-state h3 {
    color: #cfe5ff;
    margin: 0 0 8px 0;
    font-size: 18px;
}

.empty-state p {
    color: #94a3b8;
    margin: 0;
    font-size: 14px;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    #quick-start-section .title {
        font-size: 24px;
        margin-bottom: 6px;
    }

    #quick-start-section .subtitle {
        font-size: 13px;
        margin-bottom: 20px;
    }

    #upload-drop-zone {
        padding: 24px 16px !important;
    }

    #upload-drop-zone > div:first-child {
        font-size: 40px;
        margin-bottom: 8px;
    }

    #upload-drop-zone h2 {
        font-size: 18px;
        margin: 0 0 4px 0;
    }

    #upload-drop-zone > p:nth-of-type(2) {
        font-size: 12px;
        margin: 0 0 12px 0;
    }

    #quick-upload-btn {
        padding: 10px 20px !important;
        font-size: 14px !important;
        height: auto !important;
    }

    #demo-btn,
    #quick-analyze-btn {
        padding: 10px 20px !important;
        font-size: 14px !important;
        height: auto !important;
        flex: 1;
        min-width: calc(50% - 6px);
    }

    div[style*="display: flex; gap: 12px; flex-wrap: wrap"] {
        gap: 8px !important;
    }
}

@media (max-width: 480px) {
    #quick-start-section .title {
        font-size: 20px;
    }

    #upload-drop-zone {
        padding: 16px 12px !important;
        margin-bottom: 16px !important;
    }

    #demo-btn,
    #quick-analyze-btn {
        flex: 1 1 100% !important;
        min-width: 100% !important;
    }

    div[style*="display: flex; gap: 12px; flex-wrap: wrap"] {
        flex-direction: column;
        gap: 8px !important;
    }
}

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

/* Success Animation */
@keyframes successBounce {
    0% { transform: scale(0.8); opacity: 0; }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); opacity: 1; }
}

.success-animation {
    animation: successBounce 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}