/* ============================================
   BUTTON SYSTEM - Final Version
   ============================================ */

/* === BASE BUTTON === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-weight: 500;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    transition: var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    vertical-align: middle;
}

.btn svg,
.btn i {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
    font-size: 1.25rem;
}

/* === VARIANTS === */
.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-danger {
    background: var(--color-danger);
    color: var(--color-white);
}

.btn-success {
    background: var(--color-success);
    color: var(--color-white);
}

/* === SIZES === */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-sm svg,
.btn-sm i {
    width: 1rem;
    height: 1rem;
    font-size: 1rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-lg svg,
.btn-lg i {
    width: 1.5rem;
    height: 1.5rem;
    font-size: 1.5rem;
}

/* === ICON ONLY === */
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    border-radius: var(--radius-md);
    background: var(--gradient-primary-soft);
    cursor: pointer;
    transition: var(--transition-base);
}

.btn-icon i,
.btn-icon svg {
    width: 1.25rem;
    height: 1.25rem;
    font-size: 1.25rem;
    color: var(--color-primary);
}

.btn-icon:hover {
    background: var(--gradient-primary);
    transform: translateY(-2px);
}

.btn-icon:hover i,
.btn-icon:hover svg {
    color: var(--color-white);
}

/* === TEXT BUTTON === */
.btn-text {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    color: var(--color-primary);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-base);
    line-height: 1;
}

.btn-text:hover {
    background: rgba(255,107,0,0.1);
}

.btn-text svg,
.btn-text i {
    flex-shrink: 0;
    width: 1rem;
    height: 1rem;
    font-size: 1rem;
}

/* === DISABLED === */
.btn:disabled,
.btn-icon:disabled,
.btn-text:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* === FULL WIDTH === */
.btn-block {
    width: 100%;
}