/* ==============================================
   Base download button
   ============================================== */
.fdm-download-button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #3498db;
    color: #ffffff;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    text-align: center;
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
    box-sizing: border-box;
    border: 2px solid transparent;
    font-family: inherit;
    font-size: 1em;
    line-height: 1.4;
    vertical-align: middle;
}

.fdm-download-button:hover {
    opacity: 0.88;
    text-decoration: none;
    transform: translateY(-1px);
}

.fdm-download-button:active {
    transform: translateY(1px);
}

/* ==============================================
   Style: Flat
   ============================================== */
.fdm-btn-flat {
    border-radius: 0 !important;
}

/* ==============================================
   Style: Gradient (background set inline)
   ============================================== */
.fdm-btn-gradient {
    border-radius: 4px;
}

/* ==============================================
   Style: Pill
   ============================================== */
.fdm-btn-pill {
    border-radius: 50px !important;
    padding: 10px 30px !important;
    letter-spacing: 0.4px;
}

/* ==============================================
   Style: Outline / Ghost
   ============================================== */
.fdm-btn-outline {
    background-color: transparent !important;
    border: 2px solid var(--fdm-btn-color, #3498db) !important;
    color: var(--fdm-btn-color, #3498db) !important;
    border-radius: 4px;
}
.fdm-btn-outline:hover {
    background-color: var(--fdm-btn-color, #3498db) !important;
    color: #ffffff !important;
    opacity: 1 !important;
    transform: translateY(-1px);
}

/* ==============================================
   Style: Neon Glow
   ============================================== */
.fdm-btn-neon {
    border-radius: 4px;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.85em;
    box-shadow:
        0 0 6px  var(--fdm-btn-color, #3498db),
        0 0 14px var(--fdm-btn-color, #3498db),
        inset 0 0 8px rgba(255,255,255,0.05);
    text-shadow: 0 0 6px rgba(255,255,255,0.7);
}
.fdm-btn-neon:hover {
    box-shadow:
        0 0 10px var(--fdm-btn-color, #3498db),
        0 0 25px var(--fdm-btn-color, #3498db),
        0 0 40px var(--fdm-btn-color, #3498db),
        inset 0 0 10px rgba(255,255,255,0.1);
    opacity: 1 !important;
    transform: translateY(-1px);
}

/* ==============================================
   Style: Elevated Shadow
   ============================================== */
.fdm-btn-shadow {
    border-radius: 8px !important;
    box-shadow:
        0 4px 14px rgba(0,0,0,0.22),
        0 2px 4px  rgba(0,0,0,0.10);
}
.fdm-btn-shadow:hover {
    box-shadow:
        0 8px 24px rgba(0,0,0,0.28),
        0 4px 8px  rgba(0,0,0,0.14) !important;
    transform: translateY(-3px) !important;
    opacity: 1 !important;
}
.fdm-btn-shadow:active {
    box-shadow: 0 2px 6px rgba(0,0,0,0.18) !important;
    transform: translateY(1px) !important;
}

/* ==============================================
   Style: Minimal
   ============================================== */
.fdm-btn-minimal {
    background-color: transparent !important;
    color: var(--fdm-btn-color, #3498db) !important;
    border-color: transparent !important;
    border-bottom: 2px solid var(--fdm-btn-color, #3498db) !important;
    border-radius: 0 !important;
    padding-left: 2px  !important;
    padding-right: 2px !important;
    font-weight: 600;
    letter-spacing: 0.3px;
}
.fdm-btn-minimal:hover {
    opacity: 0.65 !important;
    transform: none !important;
}

/* ==============================================
   Style: Pulse Animated
   ============================================== */
.fdm-btn-pulse {
    border-radius: 50px !important;
    padding: 10px 28px !important;
    overflow: visible !important;
    z-index: 1;
}
.fdm-btn-pulse::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50px;
    background: var(--fdm-btn-color, #3498db);
    animation: fdm-pulse-ring 2.2s ease-out infinite;
    z-index: -1;
}
@keyframes fdm-pulse-ring {
    0%   { transform: scale(1);    opacity: 0.65; }
    70%  { transform: scale(1.45); opacity: 0;    }
    100% { transform: scale(1.45); opacity: 0;    }
}

/* ==============================================
   Error message
   ============================================== */
.fdm-error {
    color: #d63638;
    padding: 10px;
    background-color: #fcf0f1;
    border-left: 4px solid #d63638;
    margin: 10px 0;
}